Number of six digit numbers in which sum of the squares of the digits is `9` is : `(A) 60 (B) 66 (C) 72 (D) 37`

The number of six-digit numbers which have sum of their digits as an odd integer, is

The number of six digit number all digit of which are odd, is ……

Sum of the greatest 8 digit number and the smallest 9 digit number is

The average of the two-digit numbers, which remain the same when the digits interchange their positions, is (a) 33 (b) 44 (c) 55 (d) 66

VIn a two-digit number,the unit's digit is 2 more than that of ten's digit. The sum of digits is 27 less than the number. Find the product of the digits of the number. (a) 8 (b) 15 (c) 24 (d) 35

The sum of the squares of the digits of the largest prime number in two digits is