Latest CAT Aptitude Question SOLUTION: find the number of three digit number.such that when taken from left to right they form an A.P. or G.p

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(#M40011493) CAT question Keep an EYE

find the number of three digit number.such that when taken from left to right they form an A.P. or G.p

Asked In CAT richa (11 years ago)

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Garima  (11 years ago)

44 numbers

(i) considering AP - there are 16*2 + 4 cases.

{123, 135, 147, 159, 234, 246, 258, 345, 357, 369, 456, 468, 567, 579, 678, 789} and their reverse number also.
four more numbers .....{210, 420, 630, 840}

(ii) considering GP - there are eight numbers.

{124, 139, 248, 469} and their reverse numbers .

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BRIJESH KUMAR GUPTA  (11 years ago)

i think numbers 111 222 333 etc will also be considered here

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