8, 13, 21, 32, 47, 63, 83 (a) 47          (b) 63         (c) 32        (d) 83

2, 5, 11, 22, 32, 47

11, 13, 17, 25, 32, 37, 47, ?, 71, 79, ?, 109, 119, ?

Given 168xx32=5376 , then 5. 376-:16. 8 is equal to (a) 0.032 (b) 0.32 (c) 3.2 (d) 32

32 49 83 151 287 559 ?

The value of (4.7 xx 13.26+4.7xx9.43+4.7xx77.31) is: (a) 0.47 (b) 47 (c) 470 (d) 4700

The volume of the tetrahedron whose vertices are A(1,-1,10),B(-1,-3,7),C(5,-1,1) and D(7,-4,7) is... units^3 . a) 26 b) 29 c) 32 d) None of these

47x+31y=63,31x+47y=15

If /_\A B C and /_\D E F are similar triangles such that /_A=47^0 and /_E=83^0 , then /_C= (a) 50^0 (b) 60^0 (c) 70^0 (d) 80^0

The standard deviation of the number 31, 32, 33, …, 46, 47 is a) sqrt((17)/(12)) b) sqrt((47^(2)-1)/(12)) c) 2sqrt(6) d) 4sqrt(3)

A B Ca n d P Q R are similar triangles such that /_A= 32^0 and /_R=65^0dot Then, is 83^0 (b) 32^0 (c) 65^0 (d) 97^0