`|-|-7|-3|` is equal to `-7` (b) 7 (c) 10 (d) `-10`

|-|-7|-3| is equal to (a) -7 (b) 7 (c) 10 (d) -10

7/(100) is equal to 7.1 (b) 7.01 (c) 0.7 (d) 0.07

7/(100) is equal to (a)7.1 (b) 7.01 (c) 0.7 (d) 0.07

√10*√15 is equal to (a) 6√5 (b) 5√6 (c) 7√5 (d) 10√5

If alpha,\ beta are the zeros of the polynomial p(x)=4x^2+3x+7 , then 1/alpha+1/beta is equal to (a) 7/3 (b) -7/3 (c) 3/7 (d) -3/7

If the set A contains 7 elements and the set B contains 10 elements, then the number of one-one functions from A to B is (a) 10C7 (b) 10C7 x 7! (c) 7^(10) (d) 10^7

(2/3)^(-5)x\ (5/7)^(-5) is equal to (a) (2/3x5/7)^(-10) (b) (2/3x5/7)^(-5) (c) (2/3x5/7)^(25) (d) (2/3x5/7)^(-25)

A number is selected at random from the numbrs 3,5,5,7,7,7, 9,9,9,9. The probability that the selected number is their average is 1/(10) (b) 3/(10) (c) 7/(10) (d) 9/(10)

Let a = hati - 2 hatj + 3 hatk , If b is a vector such that a.b =|b| ^(2) and |a - b | = sqrt7, then |b| is equal to a) sqrt7 b) sqrt3 c)7 d)3

If log_(10)7=a,(:then backslash log_(10)((1)/(70)) is equal to a.-(1+a) b.(a)/(10) c.(1)/(10a) d.(1+a)^(-1)