Question
Which boolean function returns true if and only if all
input variables are true?Solution
AND
If 2x+1, x+2, 2 and 5 are in proportion, then what is the mean proportional between 3.5(1-x) and 8(1+x)?
If a + b + c = 14 and ab + bc + ca = 60, then find the value of a² + b² + c².
If (a + b) = 9 and ab = 14, find the value of (a² + b²).
If Â
 = 4 then The certain sum amounts to Rs11313.5 in 2(1/2) years at 12% p.a., interest compounded 10 months. The sum (in Rs) is:
If (a + b + c) = 9, find (a – 4)3 + (b – 2)3 + ( c – 3)3 - 3(a – 4 ) (b – 2 ) (c – 3)?
- The ratio of M to N is 4:9, and that of N to O is 3:2. If the difference between O and M is 60, what is the total of M, N, and O?
- 8p 3 Â - 27q 3 Â - 36p 2 q + 54pq 2 Â is equivalent to:
- If (x + y + z) = 10 and (x 2 Â + y 2 Â + z 2 ) = 52, then find {z(x + y) + xy}.
If x3 + y3 = 9 and x + y=3 then the value of x4 + y4 is: