By how many of the following numbers is `2^(12)-1` divisible ? 2, 3,5, 7, 10, 11, 13, 14 4 (b) 5 (c) 6 (d) 7

3, 7, 6, 5, 9, 3, 12, 1, 15, (......) (a) 18 (b) 13 (c) -1 (d) 3

How many three digit numbers are divisible by 13 and having middle digit 5?(2)7(3)10(4)13

If the points (5,-1,1),(-1,-3,4) and (1,-6,10) are three vertices of a rhombus taken in order then which one of the following ils the fourth vertex? (A) (7,-4,11) (B) (3,(-7)/2,11/2) (C) (7,-4,7) (D) (7,4,11)

Use number line and add the following integers : (a) 9+(-6) (b) 5+(-11) (c) (- c 1 )+ (-7) (d) (-5) + 10 (e) ( -1 ) + ( -2 ) + (- 3 ) (f) ( - 2 ) + 8 + (- 4)

Use number line and add the following integers : a) 9 + ( − 6 ) (b) 5 + ( − 11 ) (c) ( − 1 ) + ( − 7 ) (d) ( − 5 ) + 10 (e) ( − 1 ) + ( − 2 ) + ( − 3 ) (f) ( − 2 ) + 8 + ( − 4 )

Study the following number series to answer these questions. 2 6 7 5 4 3 7 4 8 9 4 3 2 5 4 7 9 8 6 8 7 1 2 5 3 7 6 8 9 3 6 How many 7's are there in the series which are immediately preceded by an even number and immediately followed by an odd number? 1) 2 2) 4 3) 3 4) 5 5) None of these

Which of the following numbers does not lie between (4)/(5) and (7)/(13)?(1)/(2)( b) (2)/(3)(c)(3)/(4)(d)(5)/(7)