Ex 3.3, 3 Using divisibility tests, determine which of following numbers are divisible by 6: (a) 297144 To check divisibility by 6 we check that
Number is divisible by 2
Number is divisible by 3
Divisibility by 2
Since 297144 ends with 4
It is divisible by 2
Divisibility by 3
Sum of the digits = 2 + 9 + 7 + 1 + 4 + 4
Since 27 is divisible by 3
So 297144 is divisible by 3
Since 297144 is divisible by both 2 and 3
∴ It is divisible by 6.
Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.
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