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10 Mar 2006, 05:19
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The tens' digit of number x is 3, is its units' digit greater than 5?
1) The units' digit of 2x is greater than that of x
2) The tens' digit of 2x is 7
1) The units' digit of 2x is greater than that of x
2) The tens' digit of 2x is 7
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10 Mar 2006, 06:31
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A Suff x can be 31 or 32 and 2x 62 or 64. When x>=35 A) is violated
B suff 2x has tens units 7 which means that since x has tens 3 when multiplied by 2 it should have tens 6 if units digit is <5 therefore, units should be >5
SO D)
B suff 2x has tens units 7 which means that since x has tens 3 when multiplied by 2 it should have tens 6 if units digit is <5 therefore, units should be >5
SO D)
