CAT Exam Category

IF 7+8+9=110 ; 13+14+15=509 ; 19+20+21=1085 then 26+27+28=?

Read Solution (Total 3)

Assuming f(x,y,z) = round(113.2*z + 4250/x - 1516)
Then,
f(7,8,9) = 110
f(13,14,15) = 509
f(19,20,21) = 1085, and
f(26,27,28) = 1817

So, 26 + 27 + 28 - 1817
9 years agoHelpfull: Yes(0) No(0)

Assuming f(x,y,z) = round(113.2*z + 4250/x - 1516)
Then,
f(7,8,9) = 110
f(13,14,15) = 509
f(19,20,21) = 1085, and
f(26,27,28) = 1817

So, 26 + 27 + 28 = 1817 (Sorry, there was typo in earlier solution).
9 years agoHelpfull: Yes(0) No(0)
i m nt getting can somebody elaborate it
9 years agoHelpfull: Yes(0) No(0)

CAT Other Question

Below, you will find the mathematical proof that 10 equals 9.99999…. But is that possible or there is something wrong about it? Can you find the error?
x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10 Given positive real numbers x, y, and z that satisfy the following system of equations:x² + xy + y² = 5,y² + yz + z² = 4,z² + zx + x² = 1,Find x + y + z?