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important mcq for class 10 maths HMp classes

Question
1)

Given that HCF (306, 657) = 9, find LCM (306, 657).

Option

a.22338
b.21337
c.22168
d.22345
2)

The sum of a rational and an irrational number is


Options  :
a.Rational number 
b.Irrational number 
c.both rational and irrational 
d.none of these 
3)

If HCF of two numbers is 1, the two numbers are called relatively ________ or ________.


Options  :
a.prime, co-prime
b.composite, prime
c.Both option 1 and option 2
d.None of these
4)

The king, queen and jack of clubs are removed from a deck of 52 playing cards and then well shuffled. One card is selected from the remaining cards, find the probability of getting a king.


Options  :
a.1
b.3/49
c.7/17
d.None of these
5)

Cards each marked with one of the numbers 4,5,6,…20 are placed in a box and mixed thoroughly. One card is drawn at random from the box, what is the probability of getting an even prime number?


Options  :
a.1
b.2
c.3
d.0

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