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Four bells begin to toll respectively at the intervals of 8,10,12 and 16 seconds. After how many seconds will they toll together again?

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Important Questions on Arithmetic Maths

EASY
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IMPORTANT
Police Constables>Chapter 3 - Arithmetic Maths>LCM & HCF>Q 16
The product of two numbers is 2160 and their HCF is 12. The numbers are:
EASY
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IMPORTANT
Police Constables>Chapter 3 - Arithmetic Maths>LCM & HCF>Q 17
The greatest number of five digits which is divisible by 32, 36, 40, 42 and 48 is:
EASY
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IMPORTANT
Police Constables>Chapter 3 - Arithmetic Maths>LCM & HCF>Q 18
The least number of four digits which is divisible by 4, 6, 8 and 10 is:
EASY
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IMPORTANT
Police Constables>Chapter 3 - Arithmetic Maths>LCM & HCF>Q 19
The greatest number of four digits that has 144 as their HCF is:
MEDIUM
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IMPORTANT
Police Constables>Chapter 3 - Arithmetic Maths>LCM & HCF>Q 20

The least number of five digits that have 144 as their HCF, is:

EASY
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IMPORTANT
Police Constables>Chapter 3 - Arithmetic Maths>LCM & HCF>Q 21
The smallest number when increased by 1 is exactly divisible by 12, 18, 24, 32 and 40 is:
EASY
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IMPORTANT
Police Constables>Chapter 3 - Arithmetic Maths>LCM & HCF>Q 22
A heap of coconut is divided into group of 2, 3 and 5 and each time one coconut is left over. The least number of coconut in the heap is:
EASY
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IMPORTANT
Police Constables>Chapter 3 - Arithmetic Maths>LCM & HCF>Q 23
The smallest number, which when divided by 20, 25, 35 and 40 leaves a remainder of 14, 19, 29 and 34 respectively, is: