3, 10, 21, 36, 55, 70, 105 (a) 105         (b) 70          (c) 36          (d) 55

HCF of 70, 105 and 175 is___

The number of prime numbers among the numbers 105! + 2, 105! +3, 105! +4,...., 105! + 104, 105!+105, is (a) 31 (b) 32 (c) 33 (d) None of these

The number of prime numbers among the numbers 105! + 2, 105! +3, 105! +4,...., 105! + 104, 105!+105, is (a) 31 (b) 32 (c) 33 (d) None of these

The algebraic sum of deviations of 10 observations measured from 16 is 7. The mean is (a) 105 (b) 70 (c) 15.7 (d) None of these

The algebraic sum of deviations of 10 observations measured from 16 is 7. The mean is 105 (b) 70 (c) 15.7 (d) None of these

The algebraic sum of deviations of 10 observations measured from 16 is 7. The mean is 105 (b) 70 (c) 15.7 (d) None of these

Find the HCF of the following numbers : (a) 18, 48 (b) 30, 42 (c) 18, 60 (d) 27, 63 (e) 36, 84 (f) 34, 102 (g) 70, 105, 175 (h) 91, 112, 49 (i) 18, 54, 81 (j) 12, 45, 75

Construct a frequency distribution table for each of the following distributions {:(" Marks (more than) ", 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100),(" Cumulative Frequency " ,100, 87, 65, 55, 42, 36, 31, 21, 18, 7, 0):}

The ratio of two numbers is 3 : 4 and their LCM is 120. The sum of numbers is (a) 70 (b) 140 (c) 35 (d) 105