There are two water tanks A and B, A is much smaller than B. While water fills at the rate of 1 liter every hour in A, it gets filled up like, 10, 20, 40,80, 160..in tank B. 1/8 th of the tank B is filled in 22 hours. What is the time to fill the tank fully?

(a) 26

(b) 25

(c) 5

(d) 27

ANS: 25

Explanation:

Tank B is filled in geometric progression, so after 22 hrs water in tank will be = 10 * 2^21 = x/8 where x = volume of tank x = 10 * 2^24 thus by geometric progression we get that n-1 = 24 so n = 25, hence time required is 25 hrs.

Q2. A sheet of paper has statements numbered from 1 to 70. For all values of n from 1 to 70. Statement n says At least n of the statements on this sheet are false.Which statements are true and which are false?

(a) The even numbered statements are true and the odd numbered are false.

(b) The odd numbered statements are true and the even numbered are false.

(c) The first 35 statements are true and the last 35 are false.

(d) The first 35 statements are false and the last 35 are false.

ANS: C

Explanation:

Note: For this type of Questions, follow this:

--At least- Ist half are true, Last half are false

--Exactly- Last second one is true or (N-1)th Statement is true

--Almost- All are true.

Aliter :

Q3. Unnecessary data. A lady has fine gloves and hats in her closet- 18 blue- 32 red , 10 white , 25 yellow, 55 purple, 30 orange. The lights are out and it is totally dark in spite of the darkness. She can make out the difference between a hat and a glove. She takes out an item out of the closet only if she is sure that if it is a glove. How many gloves must she take out to make sure she has a pair of each color of blue, red, yellow?

(a) 59

(b) 8

(c) 50

(d) 42

ANS: a(32+25+2)

Explanation:

Note: For this type of questions:

Bigger+Middle+1 (Suppose 18, 32, 25 =32+25+1), If you do not find answer in options, choose the one closer those the answer you got.

Q4. The IT giant Tirnop has recently crossed a head count of 150000 and earnings of $7 billion. As one of the forerunners in the technology front, Tirnop continues to lead the way in products and services in India. At Tirnop, all programmers are equal in every respect. They receive identical salaries and also write code at the same rate. Suppose 12 such programmers take 12 minutes to write 12 lines of code in total. How long will it take 72 programmers to write 72 lines of code in total?

For this type question you should follow d step of basic math that will helpful you get enough time from that.

12 prog 12 line 12 min

1 prog 12 line 12*12

1 1 12*12/12

72 1 12*12/(12*72)

72 72 12*12*72/(12*72)

ANS: 12

Explanation:

Note: This question appears 3 times in our question but app is different please follow basic rule think it it is very very easy.

Q5. 12 people {a1, a2, a12} meet and shake hands in a circular fashion. In other words, there are totally 36 handshakes involving the pairs, {a1, a2}, {a2, a3}, {a11, a12}, {a12, a1}. Then size of the smallest set of people such that the rest have shaken hands with at least one person in the set is

(a) 12 (b) 4 (c) 18 (d) 11 ANS: A

Explanation:

12 x 11 / 2 = 66 Handshakes

Q6. 10 suspects are rounded by the police and questioned about a bank robbery. Only one of them is guilty. The suspects are made to stand in a line and each person declares that the person next to him on his right is guilty. The rightmost person is not questioned. Which of the following possibilities are true?

A. All suspects are lying.

B. leftmost suspect is innocent.

C. leftmost suspect is guilty

(a) A only

(b) A or C

(c) A or B

(d) B only

ANS: C

Explanation:

Here leftmost person is lying since there is nobody to his right!-U have to visualise the rightside of the person and not yours!

Ans is c . Here leftmost person is lying since there is nobody to his right!-

you have to visualise the rightside of the person and not yours!

< 1< 2< 3< 4< 5< 6< 7< 8< 9< 10 this is there right side they are facing u..10th right most of you not questioned left most of u is 1 he is guilty as he is saying that the person to his right is guilty but there is no one to his right and first statement is false as 2 is not lying as 1(left most of u) is guilty as 1 is guity then not innocent so neither of them

Q7. Alok and Bhanu play the following min-max game. Given the expression N = 15 + X*(Y ? Z) Where X, Y and Z are variables representing single digits (0 to 9), Alok would like to maximize N while Bhanu would like to minimize it. Towards this end, Alok chooses a single digit number and Bhanu substitutes this for a variable of her choice (X, Y or Z). Alok then chooses the next value and Bhanu, the variable to substitute the value. Finally Alok proposes the value for the remaining variable. Assuming both play to their optimal strategies, the value of N at the end of the game would be?

ANS: 15+18 =33

Q8. How many four digit numbers can be formed using the digits 1, 2, 3, 4, 5 (but with repetition) that are divisible by 4? Can you help Alok find the answer?

(a) 100 (b) 125 (c) 75 (d) 85

ANS: 5^n-i

Q9. The age of the two friends were in the ration of 6:5.If the sum of their ages is 66.Then after how many years their ratio will become 7:6?

a)11 b) 6 c) 10 d) 12

ANS: 6

Q10. The age of the two friends were in the ratio of 2:3.If the sum of their ages is 55.Then after how many years their ratio will become 4:5?

a) 11

b) 33

c) 22

d) 44

ANS: 22

Explanation:

Let the age be the friends be 2x and 3x. Sum of their ages = 55

2x + 3x = 55 => 5x=55 => x=11

Their ages are 22 and 33

After k years both of them will be 22+k and 33+k years old

Ratio of their age at that time will me 4:5

• (22+k)/(33+k)=4/5

• 5(22+k)=4(33+4) => 110 + 5k = 132+4k

• K=132-110 = 22

Q11. A volume of 10936 l water is in a container of sphere.How many semisphere of volume 4l each will be required to transfer all the water into the small semispheres?

a) 2812

b) 8231

c) 2734

d) 4222

ANS: 2734

Q12. A person is manufacturing a house. He bought 20 ropes of wire which has a density of 300 Kg/m3.The height of the building to be constructed is 40 m. If the capacity of the current passed in the wire is 20 A and the voltage capacity is 80 Volts.Then what will be the opposing force to the current if the wire is used ?

a) 2 b) 4 c) 8 d) 1600

ANS: 4

Q13. A horse chases a pony 2 hours after the pony runs. Horse takes 3 hours to reach the pony. If the average speed of the horse is 81Kmph.Then what is the average speed of the pony?

a) 46.4 b) 51 c) 53.4 d) 48.6

ANS: 48.6

Explanation:

Horse covers = 81*3 = 243 kms So ponys speed = 243/(2+3) = 243/5 = 48.6

Q14. The difference between two no is 9 and the product of the two is 14.What is the square of their sum?

a)120 b)130 c)137 d)145

Explanation:

One number be x and other y, then x - y = 9 (x - y)2 = 81 x2 + y2 = 81 + 2xy = 109 (x+y)2 = x2 + y2 + 2xy = 109 + 28 = 137 So answer is 137

Q15) On planet korba, a solar blast has melted the ice caps on its equator. 9 years after the ice melts, tiny planetoids called echina start growing on the rocks. Echina grows in the form of circle, and the relationship between the diameter of this circle and the age of echina is given by the formula d = 4*v (t-9) for t = 9 where d represents the diameter in mm and t the number of years since the solar blast.Jagan recorded the radius of some echina at a particular spot as 7mm. How many years back did the solar blast occur?

a) 15 b) 21.25 c) 12.25 d) 14.05

ANS: 15

Explanation:

d = 4*(t-9) Given r = 12 mm So, d = 24 mm So, 24 = 4t - 36 4t = 60 t = 15 years