1.

The following table shows the relation between a and b. `{:(a,1,2,3,4,5),(b,2,5,12,20,30):}` Express the relation between a and b with b as the subject.A. `b=2a`B. `b=3a`C. `b=(a+b)^(2)`D. `b=a(a+1)`

Answer» Correct Answer - D
From the given table,
`brArr 2=1(1+1)`
`rArr 6=2(2+1)`
`rArr 12=3(3+1)` . . . . . . .
`therefore b=a(a+1)`
Hence, the correct option is (d).


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