Edit MetaData
1Â year, 3Â months ago
1Â year, 3Â months ago
yes but after difference of 49 we have to take difference of 81 so ... 9^2 +91 =81+91= 172
1Â year, 3Â months ago
11^2 + 91= 121+91=212
Difference is the sq. of odd no.s.
Quick, Easy and Effective Revision
By proceeding you agree to create your account
Free CAT Formulas PDF will be sent to your email address soon !!!