Series Based MCQ Quiz - Objective Question with Answer for Series Based - Download Free PDF

Given: 6154932

By adding 2 in the even digits and subtracting 1 from the odd digits, we will get,

The new number formed is: 8046842

Here, the digits that appear more than once are 4 and 8.

So, the number of digits that appear more than once is: 2

Hence, the correct answer is "Option 4".

Given:

5217643

2 is added to each even digit and 2 is added to each odd digit in the number

New Number: 7 4 3 9 8 6 5 

The sum of the first digit from the left and the first digit from the right in the new number thus formed

7 + 5 = 12.

Hence, the correct answer is "Option 4".

Given number: '9362145'

Original digits: 9, 3, 6, 2, 1, 4, 5

Aarranged in ascending order: 1, 2, 3, 4, 5, 6, 9

1, 2, 3, 4, 5, 6, 9

The digit second from the left is '2'.

The digit third from the right is '5'.

Sum of these digits:

2 + 5 = 7

Hence, the correct answer is "Option 2".

Given number: '2846359'

Original digits: 2, 8, 4, 6, 3, 5, 9

Arranged in ascending order: 2, 3, 4, 5, 6, 8, 9

Original number:  2  8  4  6  3  5  9

Sorted number:    2  3  4  5  6  8  9

Thus, position of 2, 4 and 9 remain unchanged.

Hence, the correct answer is "Optio 1".

Given:

1 is added to each odd digit and 2 is subtracted from each even digit in the number

Thus, two number appears more than once ( 6 and 4).

Hence, the correct answer is "Option 4".

The logic followed here is:

Condition to be checked:

i) The number 8 not followed by the number 4 but is preceded by the number 5 are given below:-

5 → 8 → Not 4 (4)

6 5 8 2 3 5 8 1 2 5 8 3 4 3 5 6 5 4 5 8 6 5 8 4 5 8

So, there are 5 pairs in which the number 8 is not followed by the number 4 but is preceded by the number 5.

Hence, "option 1" is the correct answer.

Mistake Points 

Immediately preceded by means immediately before or to come just before.

Immediately followed by means immediately after or to come just after.

Given: 5442673314884743581

The number of 4s that are completely divisible by the number on their right but not divisible by the number on their left is:

Note: other 4s are not counted because

Hence, the correct answer is "1".

Given number is: 56789

After 1 is added to every odd digit and 1 is subtracted from every even digit as per the question the number become: 658710

Mistake Points

Immediately preceded by means immediately before or to come just before.

Immediately followed by means immediately after or to come just after.

The pattern followed here is:

Condition to be checked:

i) 4’s is immediately preceded by an even number and also immediately followed by an odd number.

Even number → 4 → Odd number.

Given Series: 245341844248643641741842647

4’s which are immediately preceded by an even number AND also immediately followed by an odd number → 245341844248643641741842647

Hence, there are 4 such 4's.

Given that:-

6 7 4 8 5 8 8 4 8 3 2 5 8 6 7 8 3 8

• If the first and second, third, and fourth terms of the sequence are interchanged, then:-

7 6 8 4 5 8 8 4 8 3 2 5 8 6 7 8 3 8

There are two (5 8 6, 7 8 3) 8s that will not be divisible by the numbers on their left and right number.

Hence, "option 4" is the correct answer.

We have to find the triad which looks like (odd, odd, even) in the given series:

We can see that there is only one such odd number which is immediately preceded by an odd number and immediately followed by an even number.

Hence the correct answer is option 2)

Given the number sequence:

5 3 8 4 7 9 6 5 3 9 2 7 8 2 1 4 5 6 3 8 2 6 5 8 6 7

There are total 8 times an odd number is immediately followed by an even number.

Hence, "8" is the correct answer.

Given series: 3 6 17 2 4 8 13 12 14 1 3 6 19

After deleting even numbers:

3 17 13 1 3 19

Here, 4^th from the right is 13 when even numbers from the series are deleted.

Given series:

1 1 2 1 5 6 7 2 2 1 1 1 5 1 2 2 1 1 3 2 5 1 2 2 6 6 7 8 5 1 2 9 8 1 1 1 7 5 2 1