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Re: Successive Discount
by TG Team - Thursday, 17 March 2011, 01:30 PM
 
Mohit smile

There is no need to find the exact HCF in this case. You can directly check with the options easily. (Answer option + 8) must be the HCF of the three numbers. And it can be easily checked that 15 + 8 = 23 doesn't divide 231, 10 + 8 = 18 doesn't divide 189 and 21 + 8 = 29 also doesn't divide any of them.
So answer will be d.

Kamal Lohia