If `(31+15)+\ x=31+(15+23),` then by using associativity of addition `x=` (a )46 (b) 38 (c) 23 (d) 69

In Fig.112, if \ A B C D , then x= (a) 32 (b) 42 (c) 52 (d) 31

1, 2, 6, 15, 31, 56, 91 (a) 31 (b) 91 (c) 56 (d) 15

In Fig.112, if \ A B || C D , then x= (a) 32 (b) 42 (c) 52 (d) 31

If the mode of 22 ,\ 21 ,\ 23 ,\ 24 ,\ 21 ,\ 20 ,\ 23 ,\ 26 ,\ x and 26 is 23, then x= (a) 20 (b) 21 (c) 23 (d) 24

The marks in a subject for 12 students are as follows: 31, 37, 35, 38, 42, 23, 17, 18, 35, 25, 35, 29 For the given data, find the (a) range (b) mean (c) median (d) mode

Amino acids present in C-peptide of pro-insulin are (A) 23 (B) 31 (C) 38 (D) 43

The square root of 535.9225 is (a) 23.15 (b) 23.45 (c) 24.15 (d) 28.25

The value of (231)/(1000) is (a)0.231 (b) 2.31 (c) 23.1 (d) 0.0231

If variance of a random variable x is 23, then what is the variance of 2x+10:(a)56 (b) 33 (c) 46 (d) 92

If 2x+3y=31,backslash backslash y-z=4 and x+2z=11, then what is the value of x+y+z?( a )12 (b) 13 (c) 15 (d) 16