`{(2^(403))/(15)}=(k)/(15)` then find `k`. (a) `2` (b) `8` (c) `1` (d) `4`

If x+\ sqrt(15)=4, then x+1/x= (a)2 (b) 4 (c) 8 (d) 1

If a : b=4:5 and b : c=2:3, then a : c (a) 4:3 (b) 8: 15 (c) 8:9 (d) 5:3

25. The integer k for which the inequality x 2 -2(4k-1)x +15k 2 - 2k-7 > 0 is valid for any real x is (a) 2 (b) 3 (c) 4 (d) infinite

If (a)/(b+c)=(b)/(c+a)=(c)/(a+b)=K, then the value of K is +-(1)/(2)(b)(1)/(2) or -1(c)-1(d)(1)/(2)

If (3/4)^3+(1 1/2)^3 +(2 1/4)^3 +? upto 15 terms =225k, then k is equal to (A) 108 (B) 9 (C) 27 (D) 54

If (3/4)^3+(1 1/2)^3 +(2 1/4)^3 +? upto 15 terms =225k, then k is equal to (A) 108 (B) 9 (C) 27 (D) 54

The fractional part of 2^(4n)/15 is (n in N) (a) 1/15 (b) 2/15 (c) 4/15 (d) none of these

If D_k=|[1, n, n];[ 2k, n^2+n+1, n^2+n];[ 2k-1, n^2, n^2+n+1]|a n dsum_(k=1)^n D_k=56. then n equals (a) 4 (b) 6 (c) 8 (d) none of these

If the fractional part of the number (2^(403))/(15) is (k)/(15) then k is equal to

If the fractional part of the number (2^(403))/(15) is (k)/(15) then k is equal to