Aptitude | Odd Man Out And Series

64, 71, 80, 91, 104, 119, 135, 155

Byadmin July 18, 2022

Question: 64, 71, 80, 91, 104, 119, 135, 155
[A].

[B].

[C].

104

[D].

119

Answer: Option E

Explanation:

Go on adding 7, 9, 11, 13, 15, 17, 19 respectively to obtain the next number.

So, 135 is wrong.

Aptitude | Odd Man Out And Series

3, 7, 6, 5, 9, 3, 12, 1, 15, (….)

Question:
3, 7, 6, 5, 9, 3, 12, 1, 15, (….)

[A].

18
[B].
13
[C].
-1
[D].
3

Answer: Option C

Explanation:

There are two series, beginning respectively with 3 and 7. In one 3 is added and in another 2 is subtracted.

The next number is 1 – 2 = -1.

Read More 3, 7, 6, 5, 9, 3, 12, 1, 15, (….)
Compound Interest | Mathematics Mcqs

The difference between the simple interest and the compound interest on Rs 5000 at 10% P.a for 3 years is:_______?

The difference between the simple interest and the compound interest on Rs 5000 at 10% P.a for 3 years is:_______?

A. Rs 145
B. Rs 150
C. Rs 165
D. Rs 180
E. None of these

Read More The difference between the simple interest and the compound interest on Rs 5000 at 10% P.a for 3 years is:_______?
Aptitude | Surds And Indices

(25)7.5 x (5)2.5 ÷ (125)1.5 = 5?

Question: (25)7.5 x (5)2.5 ÷ (125)1.5 = 5?
[A].

8.5
[B].
13
[C].
16
[D].
17.5

Answer: Option B

Explanation:

Let (25)7.5 x (5)2.5 ÷ (125)1.5 = 5x.

Then, (52)7.5 x (5)2.5 = 5x

(53)1.5

5(2 x 7.5) x 52.5 = 5x

5(3 x 1.5)

515 x 52.5 = 5x

54.5

5x = 5(15 + 2.5 – 4.5)

5x = 513

x = 13.

Read More (25)7.5 x (5)2.5 ÷ (125)1.5 = 5?

Aptitude | Permutation And Combination

In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there?

Question: In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there?
[A].

159

[B].

194

[C].

205

[D].

209

Answer: Option D

Explanation:

We may have (1 boy and 3 girls) or (2 boys and 2 girls) or (3 boys and 1 girl) or (4 boys).

Required number
of ways

= (6C1 x 4C3) + (6C2 x 4C2) + (6C3 x 4C1) + (6C4)

= (6C1 x 4C1) + (6C2 x 4C2) + (6C3 x 4C1) + (6C2)

= (6 x 4) +

6 x 5

4 x 3

6 x 5 x 4

x 4

6 x 5

2 x 1

3 x 2 x 1

2 x 1

= (24 + 90 + 80 + 15)

= 209.

Aptitude | Time And Work

A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?

Question: A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?
[A].

11 days
[B].
13 days
[C].

20 3 days

17

[D].
None of these

Answer: Option B

Explanation:

Ratio of times taken by A and B = 100 : 130 = 10 : 13.

Suppose B takes x days to do the work.

Then, 10 : 13 :: 23 : x x = 23 x 13 x = 299 .

10 10

A’s 1 day’s work = 1 ;

23

B’s 1 day’s work = 10 .

299

(A + B)’s 1 day’s work = 1 + 10 = 23 = 1 .

23 299 299 13

Therefore, A and B together can complete the work in 13 days.

Read More A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?
Aptitude | Time And Work

Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. What is the ratio between the capacity of a man and a woman?

Question: Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. What is the ratio between the capacity of a man and a woman?
[A].

3 : 4
[B].
4 : 3
[C].
5 : 3
[D].
Data inadequate

Answer: Option B

Explanation:

(20 x 16) women can complete the work in 1 day.

1 woman’s 1 day’s work = 1 .

320

(16 x 15) men can complete the work in 1 day.

1 man’s 1 day’s work = 1

240

So, required ratio

= 1 : 1

240 320

= 1 : 1

3 4

= 4 : 3 (cross multiplied)

Read More Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. What is the ratio between the capacity of a man and a woman?

Then,	(52)7.5 x (5)2.5	= 5x
	(53)1.5

	5(2 x 7.5) x 52.5	= 5x
	5(3 x 1.5)

	515 x 52.5	= 5x
	54.5

20	3	days
	17

Similar Posts