Discussion
Home ‣ Aptitude ‣ Odd Man Out and Series See What Others Are Saying!
- Question
- 3, 10, 21, 36, 55, 70, 105?
Options- A. 105
- B. 70
- C. 36
- D. 55
- Correct Answer
- 70
ExplanationThe pattern is 1 x 3, 2 x 5, 3 x 7, 4 x 9, 5 x 11, 6 x 13, 7 x 15 etc.
So 70 is not correct. - 1. A secret can be told to only 3 persons in 3 minutes. Each person in turn tells 3 other persons in the next 3 minutes and the processes continues accordingly. In 30 minutes how many persons can be told this secret in this way ?
Options- A. 88572
- B. 77854
- C. 99584
- D. 55654 Discuss
- 2. A and B are positive integers. If A + B + AB = 65, then what is the difference between A and B (A, B ? 15)?
Options- A. 3
- B. 4
- C. 5
- D. 6 Discuss
- 3. Simplify the following equation [K-L2-K+L2]4K = a/b
Options- A. K = b /a
- B. bL = -a
- C. KL = 1
- D. aK = -b Discuss
- 4. 64/12 in simplest form?
Options- A. 19/6
- B. 32/4
- C. 16/3
- D. None of the above Discuss
- 5. If x + y + z = 0, then what is the value of (3y2 + x2 + z2 )/(2y2 ? xz)?
Options- A. 2
- B. 1
- C. 3/2
- D. 5/3 Discuss
- 6. 56/32 simplified value?
Options- A. 1.705
- B. 1.450
- C. 1.75
- D. 7.50 Discuss
- 7. If P = 7 + 4?3 and PQ = 1, then what is the value of 1/P2 + 1/Q2 ?
Options- A. 196
- B. 194
- C. 206
- D. 182 Discuss
- 8. Along a yard 225 metres long, 26 trees are palnted at equal distances, one tree being at each end of the yard. What is the distance between two consecutive trees
Options- A. 8
- B. 9
- C. 10
- D. 11 Discuss
- 9. If a3 + 3a2 + 9a = 1, then what is the value of a3 + (3/a)?
Options- A. 31
- B. 26
- C. 28
- D. 24 Discuss
- 10. A class consists of both boys and girls along with a teacher. After a class, the teacher drinks 9 litres of water, a boy drinks 7 litres of water and a girl drinks 4 litres of water. If after a class 42 litres of water was consumed, find the number of girls in the class ?
Options- A. 8
- B. 6
- C. 5
- D. 3 Discuss
More questions
Correct Answer: 88572
Explanation:
Given a secret is told to 3 persons in 3 minutes.
And if the process continues with each person saying 3 other persons,
In 30 minutes => the rocess for 10 times because each person time is 3 minutes.
Required number of persons =
Now it forms a geometric progression,
Sum to n terms is
Here a = 3, r = 3
=> 59048 x 3 /2
= 88572.
Correct Answer: 5
Correct Answer: bL = -a
Explanation:
=> - 4KL/4K = a/b
=> L = - a/b
=> bL = -a
Correct Answer: 16/3
Explanation:
64/12 = 16/3 in simplest form.
Correct Answer: 2
Correct Answer: 1.75
Explanation:
56/32 can be reduced as
56/32
= 28/16
= 14/8
= 7/4
= 1 3/4
= 1.75
Hence, simplified value of 56/32 = 3/4 = 1.75.
Correct Answer: 194
Correct Answer: 9
Explanation:
26 trees have 25 gaps between them,
Required distance (225/25) = 9
Correct Answer: 28
Correct Answer: 3
Explanation:
Given teacher drinks 9 ltr
Let number of boys be 'A'.
Let number of girls be 'B'.
Boy drinks 7 ltr and girl drinks 4 ltr
After class total water consumed = 42 ltr
Then,
9 + 7A + 4B = 42
=> 7A + 4B = 33
By trial and error method,
The only integers which satisfy the equation is A = 3 and B = 3
Therefore, number of girls in the class = 3.
Comments
There are no comments.More in Aptitude:
Programming
Copyright ©CuriousTab. All rights reserved.