Question

How many 9's are sandwiched between 6 and 7 in 696996676979669779667 ?

Answer 1

7 nines are sandwiched between 6 and 7...

Answer 2

Answer: Four number of 9 are sandwiched.

Explanation:

There are 21 digits given in the question.

First, we need to find the 6 and 7 pairs in the given question.

There are 4 pairs of 6 and 7 in which two is 7 and 6, so, taking all the pair in account, we get 4 pairs in total.

• There is 9 in between 9th and 11th term which is 6 and 7
• There is 9 in between 14th and 16th term which is 6 and 7
• There is 9 between 11th and 13th term which is 7 and 6
• There is 9 in between 17th and 19th term which is 7 and 6