Aptitude MCQS test No. 58: Quantitative Reasoning Basic Arithmetic HCF & LCM (I)

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1. Determine the L.C.M. of 2/5,  3/10 and 6/25 ?

 
 
 
 

2. Find the least number which when decreased by 11 is divisible by 14, 15, 21, 32 and 60 ?

 
 
 
 

3. Find  the greatest number of five digits which when divided by 12, 15, 21, 25 and 28 leaves 5, 8, 14, 18 and 21 as remainder, respectively ?

 
 
 
 

4. Find the side of the largest square slabs which can be paved on the floor of a room 5 metres 44 cm long and 3 metres 74 cm broad ?

 
 
 
 

5. The H.C.F. of two number is 12 and their difference is 12 The number are ?

 
 
 
 

6. How often will five bells toll together in one hour if they start together and toll at interyals of 5, 6, 8, 12, 20 seconds, respectively ?

 
 
 
 

7. Five bells begin toll together and toll at intervals of 36, 45, 72, 81 and seconds, After what interval of time will they keep on tolling together ?

 
 
 
 

8. Find the greatest number of four digits which must be added to 5231 so that the final number become exactly divisible by 12, 15, 27, 32 and 40 ?

 
 
 
 

9. The H.C.F. of two number is 11 and their L.C.M. is 696. If one of the number is 77, find the other ?

 
 
 
 

10. Find the least number of six digits which is exactly divisible by 15, 21 and 28 ?

 
 
 
 

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