1.The ratio of boys and girls in a culb is 3 : 2. Which of the following could be the actual number of members?

(A) 16            (b) 18                 (c) 25             (d) 24

Explanation:  Sum of the ratio = 3 + 2 = 5

The actual number of members will be divisible by 5. Only option (c) 25 is divisible by 5.

2.30% apples out of 450 are rotten. How many apples are in good condition ?

(a) 125                   (b) 315                        (c) 240                  (d)  180

Explanation:

rotten apples=

The number of apples in good condition ,

=

3.The present age of son is half of the present age of his mother. Ten years ago, his mother’s age was thrice the age of her son, What is the present age of the son?

(a) 25 years                  (b) 20 years                     (c) 30 years                 (d)  40 years

Exp. Let, age of mother x years

Age of son years

According to question,

Age of son years

1. The average to two numbers is 6.5 and square root of their product is 6. What are the numbers?

(a) 11 and 2                  (b) 8 and 5                    (c) 10 and 3               (d)  9 and 4

Exp. Let, Two no. be x,y respectively

According to question ,

X + y =

x + y =13………(i)

And,

From (i),

Numbers be 9 and 4.

1. a is greater than b by 2 and b is greater than c by 10. If a + b + c=130, then (b + c) – a=?

(a) 42                  (b) 38                    (c) 34              (d)  44

Exp. Given, a + b + c = 130

According to question,

a= b + 2

b= c + 10

Again, c = b-10

So, b + 2 + b + b -10=130

Similarly, c = 46-10=36

1. L. C. M of 5,6,4 and 3 in 60

On dividing 2497 by 60, the remainder is 37

Number to be added = 60-37=23

7.The face value of 8 in the number 458926 is,

(a) 8000                 (b) 1000                    (c) 8              (d)  8926

Exp. The face value of a digit is the digit itself, at whatever place it may be. It is unchangeable and definite.

So, The face value of 8 in the number 458926 is 8.

8.The total cost of flooring a room at TK 8.50 per square meter is TK 510. If the length of the room is 8 m, its breadth is-

(a) 8.5 m                (b) 7.5 m                   (c) 10.5 m             (d)  12.5 m

Exp. Area of the room = sq meter

So, 8x = 60

9.A can do a piece of work in 4 hours, B and C together in 3 hours, and A and C together in 2 hours. How long will B alone take to do it ?

(a) 8 hours               (b) 12 hours                   (c) 10 hours             (d)  24 hours

Exp. A can do in 1 hour =

(B+C) can do in 1 hour =

(A+C) can do in 1 hour =

(B-A) can do in 1 hour =

So,

Bcan do in 12 hours.

10.A  Speed of 14 meters per second is the same as

(a) 50 km/hr             (b) 46.6 km/hr                   (c) 28 km/hr             (d)  70 km/hr

Exp. 14 meters per second =

1. Oranges are bought at 5 for TK 10 and sold at 6 for TK 15. The gain percent is-

(a) 50%                  (b) 40%                   (c) 25%             (d)  35%

Exp.     Cost price of 1 orange =  TK.

Selling price of 1 orange =  TK.

Profit percentages =

25%

1. By selling an article for TK. 100, a man gains TK. 15 . Then, his gain % is-

(a) 15%                                                                  (b)                    (c)                                     (d)

Exp. Cost price  = TK. (100-15) = TK. 85

Gain % =

(a) 5                  (b) 6                  (c) 8                (d)  None of these

Exp.

1. Two numbers differ by 5. If their product is 336, then the sum of the two numbers is

(a) 21                  (b) 37                  (c) 28                (d)  51

Exp.   Let, two no be x and y respectively.

So, x – y = 5

xy = 336

1. Evaluate :

(a) 20                  (b) 16                  (c) 24                (d)  30

Exp.

(a) 4.752                  (b) 12                   (c) 15.84                (d)  13.2

Exp.

(a) 4.752                  (b) 12                   (c) 15.84                (d)  13.2

Exp.

1. P and Q started a business in the ratio of 2:3. After 1 year P left the business but Q continues. After years they had the profit of TK. 260000. What is the profit of Q ?

(a) TK. 10400            (b) TK. 13000            (c) TK. 15600            (d)  None of these

Exp.  Ratios of Amount ,

Profit of Q =

1. How much time will it take for an amount of TK. 450 to yield TK. 81 as interest at 4.5% per annum of simple interest?

(a) 3.5 years                  (b) 4.5 years                   (c) 4 years            (d)  5 years

Exp: we know, Time =

1. A person crosses a 600 m long street in 5 minuts. What is his speed in km per hour ?

Exp.

1. If 8 man can reap 80 hectares in 24 days, then how many hectares can 36 men reap in 30 days?

(a) 350                 (b) 400                  (c) 450             (d)  425

Exp. Let, x hectares be required

According to question,

1. The ratio 5:4 expressed as a percent equals

(a) 125%                  (b) 40%                   (c) 80%             (d)  12%

Exp.

1. The average of 6 numbers is 7. The average of three numbers of them is 5. What will be average of the remaining numbers ?

(a)  15                (b)  30                  (c) 42            (d)  9

Exp.  Average of remaining three no.

1. In a group of 52 persons, 16 drink tea but not coffee 33 drink tea. How many drink coffee but not tea?

(a)  3                (b)  7                   (c) 19            (d)  17

Exp.   Tea = 16

Both = 17

Coffee = 19

Ans : 19

1. The last prime number is

(a)  0               (b)  1                   (c) 3            (d)  2

Ans:   (d)  2