Consider the number `n=2^(3).5^(7).11^(13).` Then the number of ordered pairs `(a,b)` so that `LCM(a,b)=b` is

Consider a number N = 2 1 P 5 3 Q 4. The number of ordered pairs (P,Q) so that the number 'N' is divisible by 44, is

Consider a number N=21 P 5 3 Q 4. The number of ordered pairs (P,Q) so that the number' N' is divisible by 9, is

Consider the nine digit number n = 7 3 alpha 4 9 6 1 beta 0. The number of ordered pairs (alpha,beta) for which the given number is divisible by 88, is

If m^2-n^2= 7 , where m, n epsilon Z , then number of ordered pairs (m,n) is

Consider the equation p = 5-2q - 3 If p = |r| + 5 , then number of possible ordered pair (r,q) is, are

If a and b are any two distinct numbers belonging to the set {1,2,......100}, then the number of pairs (a, b) such that product of a and b is divisible by 3 is 5478 2. 5278 3. 2739 3. 2639 5. 2837

Let A={2,\ 3,\ 4,\ 5,\ .......\ 17 ,\ 18} . Let ' ' be the equivalence relation on AxxA , cartesian product of A with itself, defined by (a ,\ b)(c ,\ d) iff a d=b c . Then, the number of ordered pairs of the equivalence class of (3, 2) is (a) 4 (b) 5 (c) 6 (d) 7

Consider the number N = 8 7 a 2 7 9 3 1 b , where a , b are single digit whole numbers. Number of possible ordred pairs (a, b) for which N is divisible by 72 is "(a) 0 (b) 1 (c) 2 (d) 3"

Consider the numbers 1,2,3,4,5,6,7,8,9,10. If 1 is added to each number, the variance of the numbers so obtained is (a) 6.5 (b) 2.87 (c) 3.87 (d) 8.25

Consider the numbers 1,2,3,4,5,6,7,8,9,10. If 1 is added to each number, the variance of the numbers so obtained is