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1 + 2 + 3 + ........ + 100 =?

1. A 5000
2. B 5050
3. C 5055
4. D 5550

If x is an odd integer and y is an even integer which of the statements is(are) always true? I. x + y is odd II. xy is odd III. 2x + y is even.

1. A I and III only
2. B I only
3. C II and III only
4. D III only

Sum of three different positive integeris the same as their product. Find the smallest of these three integers?

1. A 1
2. B 2
3. C 3
4. D 5

8, 14, 24, 42, ......, 142

1. A 100
2. B 112
3. C 76
4. D 84

What is the product of the odd integers between - 8 and 8?

1. A 0
2. B 10050
3. C 11025
4. D 5005

If the sum of four consicutive even integer is s, what is the greatest of the integers in terms of s?

1. A (s + 12)/4
2. B (s + 6)/4
3. C (s - 12)/4
4. D (s - 6)/4

Find the least number exactly divisible by 12, 15, 20 and 27.

1. A 300
2. B 320
3. C 430
4. D 540

If one-third of one-fourth of a number is 15, then three-tenth of that number is:

1. A 35
2. B 36
3. C 45
4. D 54

Which of the following must be odd? I. The product of two even numbers II. The product of two odd numbers III. The sum of an odd and an even number

1. A I and III only
2. B I only
3. C I, II and III
4. D II and III only

If n and p are both even number, which of the following number must be an odd number?

1. A 2n + p
2. B n + p
3. C n +2p
4. D np + 1

The average of five numbers is 27. If one number is excluded, the average becomes 24. The excluded numbers is:

1. A 25
2. B 27
3. C 30
4. D 35

How many prime numbers are there between 45 and 72?

1. A 5
2. B 6
3. C 7
4. D 8