Mental Ability - Number, Ranking & Time Sequence Questions and Answers
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Q21
If the first and second digits in the sequence 5 9 8 1 3 2 7 4 3 8 are interchanged, also the third and fourth digits, the fifth nd sixth digits and so on, which digit would be the seventh counting to your left ?
Answer: Option D
Q22
If the position of the first and the sixth digits of the sequence of numbers 8 9 0 3 2 1 4 6 7 5 are interchanged, the second and the seventh and so on, which number would be seventh from the right end ?
Answer: Option C
Q23
The letters L, M, N, O, P, Q, R, S and T in their order are substituted by none intgers 1 to 9 but not in that order, 4 is assigned to P. The difference between P and T is 5. The difference between N and T is 3. What is the integer assigned to N ?
Answer: Option C
Q24
Thirty six vehicles are parked in a parking lot in a single row. After the first car, there is one scooter. After the second car, there are two scooters. After the third car, here are three scooters and so on. Work out the number of scooters in the second half of the row.
Answer: Option C
Explanation: Let C and S denote car and scooter respectively. then, the sequence of parking is C S C S S C S S S C S S S S C S S S S S C S S S S S S C S S S S S S S C
Then above sequence has been divided into two equal halves by a line. Clearly, number of scooters in second half of the row = 15.
Q25
In the following sequence of instructions, 1 stands for Run, 2 stands for Stop, 3 stands for Go, 4 Stands for Sit and 5 stands for Wait. If the sequence were continued, which instruction will come next ?
4 4 5 4 5 3 4 5 3 1 4 5 3 1 2 4 5 4 5 3 4 5 3
Answer: Option
Q26
In a schol the following codes were used during physical exercise. '1' means 'start walking', '2' means 'keep standing', '3' means 'start running at the same spot', '4' means 'sit down', How many times will a student who performs the following sequence without error from the beginning to the end have to sit down ?
1 2 3 4 2 3 1 4 4 3 2 2 1 2 4 3 1 4 4 1 2
Answer: Option C
Q27
If the numbers from 1 to 45 which are exactly divisible by 3 are arranged in ascending order, minimum number. being on the top, which would come at the ninth place from the top ?
Answer: Option D
Q28
If the numbers from 5 to 85 which are exactly divisible by 5 are arranged in descending order, which would come at the eleventh place from the bottom ?
Answer: Option
Explanation: The required numbers in descending order are : 85, 80, 75, 70, 65, 60, 55, 50, 45, 40, 35, 30, 25, 20, 15, 10, 5.
the eleventh number from the bottom is 55.
Q29
How many numbers from 1 to 100 are there of which is not ony exactly divisible by 4 but also has 4 as a divit ?
Answer: Option A
Q30
How many numbers amongst the numbers 9 to 54 are there which are exactly divisible by 9 but not by 3 ?
Answer: Option D