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CBSE Class 10 Answered

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Asked by shettyatul17 | 05 Mar, 2019, 06:45: AM
answered-by-expert Expert Answer
If least factor of integer a is 3,  then integer a is written as , a = 3p ...............(1)
 
where p is an integer. since 3 is least factor of a, p is an odd integer, hence 3p is odd integer
 
Similarly, If least factor of integer b is 5,  then integer b is written as,  b = 5q  ...................(2)
 
where q is an integer and for the similar reason stated above, 5q is an odd initeger
 
now a+b = (3p+5q) is even integer, because sum of two odd integer is even.
 
Hence least factor of (a+b) is 2
Answered by Thiyagarajan K | 05 Mar, 2019, 10:06: AM
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