If 3*1 = 20, 6*1 = 50 and 2*6 = -40, then find the value of 5*8 = ?
The pattern followed is : $$a*b=(a-b)\times10$$
Eg :- 3*1 = $$(3-1)\times10=20$$
6*1 = $$(6-1)\times10=50$$
and 2*6 = $$(2-6)\times10=-40$$
Similarly, 5*8 = $$(5-8)\times10=-30$$
=> Ans - (D)
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