If `45-[28-{37-(15-*)}]=58` , then * is equal to: `-29` (b) `-19` (c) 19 (d) 29

45-[28-{37-(15-k)}]=58 the value of k is :

(-29)+5 is equal to: 24 (b) 34 (c) -34 (d) -24

The value of cot sum_(n=1)^(19)(cot^(-1)(1+sum_(p=1)^(n)2p)) is equal to ( a )(21)/(19) (b) (19)/(21)(c)-(19)/(21) (d) -(21)/(19)

For a non-zero rational number a ,\ a^7-:a^(12)\ is equal to a^5 (b) a^(-19) (c) a^(-5) (d) a^(19)

Find the value of k. 45 - [28 - {37 - (15 - k)}] = 58

If a-b=3 and a^(2)+b^(2)=29, find the value of ab. (a) 10 (b) 12 (c) 15 (d) 18

If y=sin^(-1)(cos x) , then ((dy)/(dx)) at x=(24 pi)/(29) is equal to (A) 1 , (B) -1 , (C) (24 pi)/(29) , (D) (-24 pi)/(29)

In Fig.98, If AB is parallel to CD and EF is a transversal, then x= (a) 19 (b) 29 (c) 39 (d) 49

If the mean of first n natural number is 15, then n= (a) 15 (b) 30 (c) 14 (d) 29

Write the following decimals in the place value table. (a) 0.29 (b) 2.08 (c) 19.60 (d) 148.32 (e) 200.812