`(1)/(15)+(1)/(15)+(1)/(15)` = ?

(17)/(15)xx(17)/(15)+(2)/(15)xx(2)/(15)-(17)/(15)xx(4)/(15) is equal to (a)0(b)1(c)10(d)11

(15)/(21) of (2)/(3)-(1)/(15)=(3)/(7)

The fractional part of (2^(4n))/(15) is (n in N)(A)(1)/(15) (B) (2)/(15)(C)(4)/(15) (D) none of these

Prove that cos(2 pi)/(15)cos(4 pi)/(15)cos(8 pi)/(15)cos(14 pi)/(15)=(1)/(16)

find the sum of 15 terms of The sum of the series (1)/(3)+(1)/(15)+(1)/(35)+(1)/(63)+..........oo terms,is

cos""(2pi)/(15)cos""(4pi)/(15)cos""(8pi)/(15)cos""(16pi)/(15)=(1)/(16)

(1)/(15xx16)=....-(1)/(16)

(3^(-1)xx5^(-1))^(-1)()_(\ \ )= 1/(15)\ \ \ (b) -1/(15) 15 (d) -15

Solve : 0/(15)+2/(15)+1/(15)

Simplify : 1'2/(15) + 2'2/(15) + 3'2/(15) + "……" + 100'2/(15)