The number of 3 digit numbers `abc` such that `bltc` is
(A) 400 (B) 405 (C) 450 (D) 410

Let a, b, c, d be non zero distinct digits. The number of 4 digit numbers abcd such that ab + cd is even is divisible by :

The total number of 4 digit numbers is 8999 (b) 9000 (c) 8000 (d) 9999

If N is the number of three digit numbers of the form abc such that a

The number of three digit numbers overline(abc) such that the arithmetic mean of b and c and the square of their geometric mean are equal is

Number of 5 digited numbers using 0,1,2,3,4 divisible by 4 with repetition is (A)800(B)600 (C) 400 (D) 200

The number of all 3-digit numbers abc (in base 10)for which (axxbxxc)+(axxb)+(bxxc)+(cxxa)+a+b+c=29 is

The sum of two digits of a number is 15. If 9 is added to the number,the digits are interchanged.What is the number? (A) 69 (B) 87 (C)96 (D) 78

The number of four-digit numbers that can be made with the digits 1,2,3,4, and 5 in which at least two digits are identical is a.4^(5)-5!b .505 c.600 d.none of these

25% of a number is less than 18% of 650 by 19. Then number is(A) 380.0 (B) 392 (C) 450 (D) 544

Is the five-digit number abc46a perfect square?