Question

Q7. Find the least value of (a + b) if 7ab4 is exactly divisible by 3.​

Answer 1

Answer:

please mark as brilliant

Step-by-step explanation:

5a, 6d, 7d, 8b, 9d

Answer 2

Answer: (a+b)= 1 , where a=0,b=1  , (0+1)= 1

Step-by-step explanation:

If 7ab4 is exactly divisible by 3 then,

7+a+b+4 = multiple of 3

a=0,b=1 as these are the least numbers , as:

7+0+1+4=12 which is a multiple of 3

Hence, (a+b) = 1 , where a=0,b=1 , (0+1)= 1.