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1.) If 21 books must be placed in a row. In how many ways these books can be arranged such that no two new books are arranged consecutively,,,
Ans : 210
2.) Two dice are thrown such that a sum of 8 is obtained in a condition that the second die must be always 4. Find the num of chances of obtaining sum of 8.
Ans : 1/6
3.) Two cans A & B contain 25% & 30 % of milk. If 6 parts of can A and 4 parts of can B acre mixed in a can C. What is the proportion of milk in can C.
Ans : 15
4.) 8 eggs were identical except one is lighter. How many times we have to weight to find out to find out the lighter.
Ans:- 3
5.) Out of 35 students if the ratio of the girls to boys is 4:3. Then by what number the girls are more than boys.
Ans:- 5
6.) one man sold two items at 20% loss and 20%profit.Net % loss/gain?
Ans:- In such cases always loss (20/10)^2= 4%loss.
7.) 4,2,3,7.5,26.25,- ,-
Find the next two numbers.
8.) Si questions was there,Given:principal=480,Rate=3.5%, Time=2 month 15 days
Find SI?
Ans:- SI =( 480*3.5*(5/2*12))/100
9.) 1/10 is how much of 3/4?
Ans:- (1/10)/(3/4)
10.) 1/6 boys and 1/3 Girls ?What is ratio if children?
Ans:- 1/2 ie 1/6+1/3=1/2 = 50%
11.) 1 rupee, 50 paisa and 25 paisa coins are there in the ratio of 2.5 : 3 : 4. For Rs 210, find the number of 1 rupee coins.
Ans : 105.
12.) 9 men and 6 women will finish a work in 5 days, similarly 3 men and 15 women can finish the same work in 10 days then in how many days 9 men and 10 women will finish the same work.
Ans :3
13.) X amount takes 10 years to become double. How many years it takes to become triple ?
Ans :15
14.) A team plays cricket in a year with a % of win by the team as 50% and the % of loosing matches as 40%. If the number of matches tied is 20, then find the number of matches played.
Ans : 200
15.) There are 8 pairs of socks and 2 socks are worn from that such that the pair of socks worn are not of the same pair. what is the number of pair that can be formed.
Ans :56
16.) Y catches 5 times more fishes than X. If total number of fishes caught by X and Y is 48, then number of fishes caught by X?
Ans: 8
17.) If a train covers 600m in 0.5 seconds, how long it will cover in 10 seconds?
Ans: 3000m = 3km
18.) The girl's age is twice that of boy, if the boy is four years old. After four years the age of the girl is
Ans: 12 years
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1.) If 21 books must be placed in a row. In how many ways these books can be arranged such that no two new books are arranged consecutively,,,
Ans : 210
2.) Two dice are thrown such that a sum of 8 is obtained in a condition that the second die must be always 4. Find the num of chances of obtaining sum of 8.
Ans : 1/6
3.) Two cans A & B contain 25% & 30 % of milk. If 6 parts of can A and 4 parts of can B acre mixed in a can C. What is the proportion of milk in can C.
Ans : 15
4.) 8 eggs were identical except one is lighter. How many times we have to weight to find out to find out the lighter.
Ans:- 3
5.) Out of 35 students if the ratio of the girls to boys is 4:3. Then by what number the girls are more than boys.
Ans:- 5
6.) one man sold two items at 20% loss and 20%profit.Net % loss/gain?
Ans:- In such cases always loss (20/10)^2= 4%loss.
7.) 4,2,3,7.5,26.25,- ,-
Find the next two numbers.
8.) Si questions was there,Given:principal=480,Rate=3.5%, Time=2 month 15 days
Find SI?
Ans:- SI =( 480*3.5*(5/2*12))/100
9.) 1/10 is how much of 3/4?
Ans:- (1/10)/(3/4)
10.) 1/6 boys and 1/3 Girls ?What is ratio if children?
Ans:- 1/2 ie 1/6+1/3=1/2 = 50%
11.) 1 rupee, 50 paisa and 25 paisa coins are there in the ratio of 2.5 : 3 : 4. For Rs 210, find the number of 1 rupee coins.
Ans : 105.
12.) 9 men and 6 women will finish a work in 5 days, similarly 3 men and 15 women can finish the same work in 10 days then in how many days 9 men and 10 women will finish the same work.
Ans :3
13.) X amount takes 10 years to become double. How many years it takes to become triple ?
Ans :15
14.) A team plays cricket in a year with a % of win by the team as 50% and the % of loosing matches as 40%. If the number of matches tied is 20, then find the number of matches played.
Ans : 200
15.) There are 8 pairs of socks and 2 socks are worn from that such that the pair of socks worn are not of the same pair. what is the number of pair that can be formed.
Ans :56
16.) Y catches 5 times more fishes than X. If total number of fishes caught by X and Y is 48, then number of fishes caught by X?
Ans: 8
17.) If a train covers 600m in 0.5 seconds, how long it will cover in 10 seconds?
Ans: 3000m = 3km
18.) The girl's age is twice that of boy, if the boy is four years old. After four years the age of the girl is
Ans: 12 years
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