`1+2-:{1+2-:(1+1/3)}` is equal to (a) `1 4/5` (b) `2 1/4` (c) `4 1/5` (d) `5 1/4`

5 tan^2 A -5sec^2 A+1 is equal to (a) 6 (b) -5 (c) 1 (d) -4

If 2^(-m)x(1)/(2^(m))=(1)/(4), then (1)/(14){(4^(m))^(1/2)+((1)/(5^(m)))^(-1)} is equal to (1)/(2) (b) 2( c) 4(d)-(1)/(4)

((-1)/5)^5x\ ((-1)/2)^3 is equal to ((-1)/2)^8 (b) -\ (1/2)^8 (c) (1/4)^8 (d) (-1/2)^(15)

Let A=[1 2 3-5] and B=[1 0 0 2] and X be a matrix such that A=B X , then X is equal to 1/2[2 4 3-5] (b) 1/2[-2 4 3 5] (c) [2 4 3-5] (d) none of these

If "x=sqrt(5)+2",then "x-(1)/(x)" equals: (a) "4," (b) "3," (c) "2," (d) "1"

If ( x + 3 , 4 - y ) = ( 1 , 7 ) , then ( x - 3 , 4 + y ) is equal to ( a ) ( -2 , -3 ) ( b ) ( -5 , 1 ) ( c ) ( 3 , 4 ) ( d ) ( 1, 5 )

1+(1)/(2)+(1)/(4)+(1)/(7)+(1)/(14)+(1)/(28) is equal to (a) 2( b) 2.5(c)3(d)3.5

Solve (a) 2/3 + 1/7 (b) 3/10 + 7/15 (c) 4/9 + 2/7 (d) 5/7 + 1/3 (e) 2/5 + 1/6 (f) 4/5 + 2/3 (g) (3/4) (1/3) (h) (5/6) (1/3) (1) 2/3 + 3/4 + 1/2 (1) 1/2 + 1/3 = 1/6 (k) (1) 1/3 + (3) 2/3 (1) (4) 2/3 +(3) 1/4 (m) ((16)/5))(7/5)

Find the value of ( 1 - 1/3 ) ( 1 - 1/4 ) ( 1 - 1/5 ) ---------- ( 1 - 1/n ) is ( a ) 2/n ( b ) 4/n ( c ) 3/n ( d ) 5/n

The value of [4/7 of 2 4/5xx1 2/3-(3 1/2-2 1/6)]div (3 1/5 div 4 1/2 of 5 1/3) is: [4/7 of 2 4/5xx1 2/3-(3 1/2-2 1/6)]div (3 1/5 div 4 1/2 of 5 1/3) का मान ज्ञात कीजिए?