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shivani |
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#1
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Dedicated Member ![]() Group: Members Posts: 3886 Joined: 1-August 05 Member No.: 2848 ![]() |
1. Guess the next number
77 58 49 45 29 27 23 |
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divz |
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#2
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![]() Dedicated Member ![]() Group: Members Posts: 1906 Joined: 9-April 05 From: in front of my pc Member No.: 2049 ![]() |
shiv.. kahan ho .. more riddles please......... i too got tht rope one correct.. while the door riddle was far beyond my comprehension..
![]() well still the square no is a night mare for me.. could get it thoroughly... Vivek yaar fir se samjhao jara.... ![]() " Never let the fear of striking out keep you from playing the game "
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vivekpm |
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#3
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Dedicated Member ![]() Group: Members Posts: 1404 Joined: 22-November 03 Member No.: 120 ![]() |
QUOTE(divyanjali @ Sep 16 2005, 03:02 PM) shiv.. kahan ho .. more riddles please......... i too got tht rope one correct.. while the door riddle was far beyond my comprehension.. ![]() well still the square no is a night mare for me.. could get it thoroughly... Vivek yaar fir se samjhao jara.... ![]() Ok Divyanjali... let me try. Maine kaha tha naa, I am not good at teaching people ![]() 1. If you take any number, it will have at least two divisors, 1 and the number itself. 2. Assume that the number is not a perfect square, for simplicity take an example of 12. 3. Such a number, which is not a perfect square, will always have divisors in pairs. 4. For example, 12 = 3*4. 12 = 2*6. So this makes 3,4 and 2,6 as divisors of 12 along with 1 and 12 (as explained in step 1). 5. Note how all the divisors of a number which is not a perfect square can only occur in pairs. 6. Now take example of a perfect square, say 64. 7. Divisors for 64 will be 1 and 64 (as explained in step 1 above). 8. Apart from this, 64 = 2*32, 64=4*16, 64=8*8. 9. Notice that 2,32 is one pair and 4, 16 is one pair but 8 which is the root of 64 cannot occur in pair. 10. So this way, a perfect square will always have odd number of divisors. Hope this makes it clear. Let me know if it needs to be more simpler ![]() Cheers, V i V e K ...
-------------------------------------------- Education is a progressive discovery of our own ignorance. -- Will Durant |
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