Mental Ability - Number, Ranking & Time Sequence Questions and Answers
Practice ModeShowing 10 of 79 questions
Q11
How many 6's are there in the following number sequence which are immeditely preceded by 9 but not immediately followed by 4 ?
5 6 4 3 2 9 6 3 1 6 4 9 6 4 2 1 5 9 6 7 2 1 4 7 4 9 6 4 2
Answer: Option B
Q12
In the follwing series of numbers, find out hw many times, 1, 3 and 7 have appeared together, 7 being in the middle and 1 and 3 on either side of 7 ?
2 9 7 3 1 7 3 7 7 1 3 3 1 7 3 8 5 7 1 3 7 7 1 7 3 9 0 6
Answer: Option A
Q13
In the series,
6 4 1 2 2 8 7 4 2 1 5 3 8 6 2 1 7 1 4 1 3 2 8 6
How many pairs alternate numbers have a difference of 2 ?
Answer: Option B
Explanation: We proceed by checking the difference between pairs of alternate numbers i.e., (6,1), (4, 2), (1,2), (2,8), (2,7), (8,4), (7,2), (4,1), (2,5), (1,3), (5,8),(3,6), (8,2), (6,1), (2,7), (1,1). (7,4), (1,1), (4,3), (1,2), (3,8) and (2,6). Of these, the pairs with a difference of 2 are (4,2) and (1,3). Clearly, there are two such pairs.
Q14
How many even numbers are there in the following sequence of numbers which are immediately followed by an odd number as well as immediately preceded by an even number ?
8 6 7 6 8 9 3 2 7 5 3 4 2 2 3 5 5 2 2 8 1 1 9
Answer: Option
Q15
Study the following number sequence and answer the questions given beow it :
5 1 4 7 3 9 8 5 7 2 6 3 1 5 8 6 3 8 5 2 2 4 3 4 9 6
How many odd numbers are there in the sequence which are immediately followed by an odd number ?
Answer: Option
Q16
Study the following number sequence and answer the questions given beow it :
5 1 4 7 3 9 8 5 7 2 6 3 1 5 8 6 3 8 5 2 2 4 3 4 9 6
How many even numbers are there in the sequence which are immediately preceded by an odd number but immediately followed by an even number ?
Answer: Option C
Q17
Study the following number sequence and answer the questions given beow it :
5 1 4 7 3 9 8 5 7 2 6 3 1 5 8 6 3 8 5 2 2 4 3 4 9 6
How many odd numbers are there in the sequence which are immediately preceded and also immediately followed by an even number ?
Answer: Option D
Q18
In he follwing series, how many such odd numbers are there which are divisible by 3 or 5, then followed by odd numbers and then also followed by even numbers ?
12, 19, 21, 3, 25, 18, 35, 20, 22, 21, 45, 46, 47, 48, 9, 50, 52, 54, 55, 56
Answer: Option C
Q19
In following number sequence, how many such even numbers are there which are exactly divisible by its immediate preceding number but not exactly divisible by its immediate following number ?
3 8 4 1 5 7 2 8 3 4 8 9 3 9 4 2 1 5 8 2
Answer: Option B
Q20
Nitin was codown from 32. Sumit was counting upwards the numbers starting from 1 and he was calling out only the odd numbers. What common number will they call out at the same time if they were calling out at the same speed ?
Answer: Option D