If `a*b` denote the bigger among `a` and `b` and if `a b=(a*b)+3` , then `4. 7=` (a) 14 (b) 31 (c) 10 (d) 8

If a*b denote the bigger among a and b and if ab=(a*b)+3, then 4.7=( a )14 (b) 31 (c) 10 (d) 8

4, 5, 7, 10, 14, 18, 25, 32 (a) 7 (b) 14 (c) 18 (d) 33

If a + b =8, a -b =4, then a^2 + b^2 is equal to (A) 20 (B) 40 (C ) 10 (D) 30

If a : b = 3/2 : 7/3 and b : c= 1/5 : 1/7 , then find a : b : c . (a) 14 : 9 : 10 (b) 9 : 14 : 10 (c) 10 : 9 : 14 (d) 4 : 5 : 7

Find m, if value of determinant |(m,2),(-5,7)| is 31. a)14 b)3 c)4 d)12

If a : b = 3 : 7 and b : c = 14 : 5, then find a : b : c.

If a : b = 3 : 7 and b : c = 14 : 5, then find a : b : c.

If a denotes xx , b denotes -: , C denotes + and d denotes -, then 8 a 3 c 24 b 12 d 19 = ?

If a : b = c : d , prove that : (6a + 7b) (3c - 4d) = (6c + 7d) (3a - 4b) .

If a, b, c, d satisfy the equation a + 7b + 3c + 5d = 0 , 8a + 4b + 6c + 2d = - 16 , 2a + 6b + 4c + 8d =16 and 5a + 3b + 7c + d = -16 then the value of (a + d) (b + c) =______