The successor of `-79` is `-80` (b) `-78` (c) 80 (d) 78

The successor of -22 is -23 (b) -21 (c) 23 (d) 21

The value of [-7.8] is

Write the successor of : (a) 2440701 (b) 100199(c)1099999(d)2345670

The sum of all the prime numbers from 1 to 20 is 75 (b) 76 (c) 77 (d) 78

The successor of 1 million is 10001(b)100001 (c) 1000001(d)10000001

The mean of 25 observations was found to be 78.4. But later on it was found that 96 was misread as 69. The correct mean is (a)76.54 (b) 78.4 (c) 79.48 (d) 81.32

The H.C.F. of two numbers is 12 and their difference is 12. The numbers are (a) 66, 78 (b) 70, 82 (c) 94, 106 (d) 84, 96

The average weight of 3 men A , B and C is 84 kg. Another man D joins the group and the average now becomes 80 kg. If another man E , whose weight is 3 kg more than that of D , replaces A , then the average weight of B , C , D and E becomes 79 kg. The weight of A is (a) 70 kg (b) 72 kg (c) 75 kg (d) 80 kg

The sum of 2.75 and 3.78 is 1.03 (b) 1.53 (c) 4.53 (d) 5.53