21, 9, 21, 11, 21, 13, 21, .......
In this alternating repetition series, the random number 21 is interpolated every other number into an otherwise simple addition series that increases by 2, beginning with the number 9.
|
Two trains, one from Howrah to Patna and the other from Patna to Howrah, start simultaneously. After they meet, the trains reach their destinations after 9 hours and 16 hours respectively. The ratio of their speeds is |
Answer |
|
If a and b are positive integers and (a-b)/3.5 = 4/7, then |
Answer |
|
If 5 women or 8 girls can do a work in 84 days. In how many days can 10 women and 5 girls can do the same work ? |
Answer |
|
If 9 men working 6 hours a day can do a work in 88 days. Then 6 men working 8 hours a day can do it in how many days? |
Answer |
|
Walking at 3/4 of his usual speed ,a man is late by 2 1/2 hr. the usual time is |
Answer |
|
In a boat 25 persons were sitting. Their average weight increased one kilogram when One man goes and a new man comes in. The weight of the new man is 70kgs. Find the Weight of the man who is going ? |
Answer |
|
A man can row 4.5 km/hr in still water. It takes him twice as long to row upstream as to row downstream. What is the rate of the current ? |
Answer |
|
A sum of money amounts to Rs. 9800 after 5 years and Rs. 12005 after 8 years at the same rate of simple interest. The rate of interest per annum is |
Answer |
|
A man starts walking at 3 pm . he walks at a speed of 4 km/hr on level ground and at a speed of 3 km/hr on uphill , 6 km/hr downhill and then 4 km/hr on level ground to reach home at 9 pm. What is the distance covered on one way? |
Answer |
|
In a group of cows and hens, the number of legs are 14 more than twice the number of heads. The number of cows is |
Answer |