How many pair of digits can be formed in the number 73915243, which have same…
2025
How many pair of digits can be formed in the number 73915243, which have same number of digits between then as in the number series (both forward and backward direction)?
- A.
None
- B.
Two
- C.
Three
- D.
More than three
- E.
One
Attempted by 133 students.
Show answer & explanation
Correct answer: D
In this digit-pair type, compare the gap between positions in 73915243 with the gap between the same digits in the natural number series. Valid pairs include 7-9, 7-2, 3-1, 1-4, and 4-3. There are five such pairs, so the count is more than three.