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CAT 2007 | Question: 10

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1 1 vote

four dight number will be like in this way(Any perfect square must end in 0,1,4,6,9,)

1100,1111,1144,1155 ,1166.,1199,

2200,2211, 2244.2255,.2266,2299,

3300,3311,3344,3355.,3366,3399,

4400,4411, 4444,4455.,4466,4499,

5500,5511, 5544,5555,5566,5599

,6600,6611,6644,6655,6666,6699

,7700,7711,7744(88^2), 7755,7766, 7799,

8800,8811,8844,8855,8866, 8899.

9900 ,9911,9944,9955,9966, 9999 here only 1 number which is perfact squre so answer is option 5) : 1

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