Find the smallest number that is a multiple of all the numbers from 1 to 10. Class 6
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Find the smallest number that is a multiple of all the numbers from 1 to 10. Class 6
Question 1.
Find the smallest number that is a multiple of all the numbers from 1 to 10. Class 6
Solution:
Smallest number that is a multiple of all numbers from 1 to 10 except 7 is 360. Now, since 7 is not a factor of any of the remaining numbers 1 to 10, so the smallest number that is a multiple of all the numbers from 1 to 10 is 360 × 7 = 2520.
Question 2.
How many prime numbers are there from 21 to 30? How many composite numbers are there from 21 to 30? Class 6
Solution:
Prime numbers from 21 to 30 are: 23 and 29 (Two).
Composite numbers from 21 to 30 are: 21, 22, 24, 25, 26, 27, 28 and 30 (Eight).
Question 3.
We see that 2 is a prime and also an even number. Is there any other even prime? Class 6
Solution:
No. There is no other even prime.