SSC CGL 2011 Question Paper Tier 1 - Shift 1 (June 19th)

Question 111

If a * b = 2a + 3b - ab, then the value of (3 * 5 + 5 * 3) is

Solution

For 3*5 put a=3 and b=5 in given equation
and for 5*3 put a=5 and b=3 in equation
now add both values

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