EASY
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IMPORTANT
Earn 100
There are four prime numbers written in the ascending order of magnitude. The product of the first three numbers and that of the last three numbers is and respectively. The fourth prime number is?
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Important Questions on H.C.F. & L.C.M.
MEDIUM
CISF Head Constable
IMPORTANT
In a school, there are boys and girls. These are to be divided into the largest possible equal classes, so that there are equal number of boys and girls in each class. How many classes are possible?
HARD
CISF Head Constable
IMPORTANT
A man was engaged for a certain number of days for Rs. 404.30 but being absent for some days he was paid only Rs. 279.90. His daily wages cannot exceed by?
MEDIUM
CISF Head Constable
IMPORTANT
Find the least (or smallest) number which when divided by and leaves no remainder.
MEDIUM
CISF Head Constable
IMPORTANT
What is the smallest number which when divided by 8, 12, 20 or 25 leaves a remainder 5 in each case?
MEDIUM
CISF Head Constable
IMPORTANT
What is the least number which when increased by 7 is exactly divisible by 12, 15, 20 and 54?
MEDIUM
CISF Head Constable
IMPORTANT
The smallest number which when divided by 8, 12, 18 and 24 leaves the remainders 5, 9, 15 and 21 respectively, is?
EASY
CISF Head Constable
IMPORTANT
Five bells in a church toll at intervals of 5, 6, 8, 12 and 20 seconds respectively. They all toll together at a certain time. At what interval of time, these five bells will keep on tolling together?
MEDIUM
CISF Head Constable
IMPORTANT
Three traffic lights at crossings change colour after every seconds, seconds and seconds respectively. At a particular time, all the crossing has red colour of light. After what time next, they will again have the red colour?
