1. Which one of the following in not a prime number?

a. 18

b. 45

d. 25

2. What is the next number of the series? 9, 16, 25, 36 ......?....

b. 59

c. 15

d. 00

3. Ten years ago, Muthu was half of Ravi in age. If the ratio of their present ages is 3:4. what will be the total of their present Ages?

a. 55

b. 45

c. 25

4. The dimensions of cinema theater are 100 m, 50 m and 18 m. How many persons can sit in the hall, if each requires 150 cub. m. of air?

a. 100

c. 50

d. 897

5. If 10 men can do a job in 15 days, then how many day shall take 3 men to do the job?

b. 60 days

c. 70 days

d. 80 days

a. 18

b. 45

**c. 49**d. 25

2. What is the next number of the series? 9, 16, 25, 36 ......?....

**a. 49**b. 59

c. 15

d. 00

3. Ten years ago, Muthu was half of Ravi in age. If the ratio of their present ages is 3:4. what will be the total of their present Ages?

a. 55

b. 45

c. 25

**d. 35**4. The dimensions of cinema theater are 100 m, 50 m and 18 m. How many persons can sit in the hall, if each requires 150 cub. m. of air?

a. 100

**b. 600**c. 50

d. 897

5. If 10 men can do a job in 15 days, then how many day shall take 3 men to do the job?

**a. 50 days**b. 60 days

c. 70 days

d. 80 days

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