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![[Post New]](/templates/default/images/icon_minipost_new.gif) 4 Nov 2007 14:41:26 IST
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show that 24n - 2n(7n+1) is some multiple of the square of 14,n I
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Happy Diwali !!!!!! |
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4 Nov 2007 15:03:17 IST
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the second last character not bvisible plz repost the question
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The heights which great men reached and kept, Were not attained by sudden flight, They, whilst their companions slept, Were toiling upwards in the night.... |
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5 Nov 2007 00:37:43 IST
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24n-2n(7n+1) =(2+14)n - n2n-1141 - 2n70 =( 2n140 + n2n-1141 + n(n-1)/2 *2n-2142 +higher powers of 142) - n2n-1141 -2n70 = (n(n-1)/2 *2n-2142 +higher powers of 142) which is divisible by142
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