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Simplify: (a) (789xx789xx789+211xx211xx2...

Simplify: `(a) (789xx789xx789+211xx211xx211)/(789xx789-789xx211+211xx211) quad` `(b) (658xx658xx658-328xx328xx328)/(658xx658+658xx328+328xx328)`

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RS AGGARWAL-NUMBER SYSTEM-All Questions
  1. Find the square root of 4a^2+b^2+c^2+4a b-2b c-4a cdot

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  2. A is counting the numbers from 1 to 31 and B from 31 to 1. A is counti...

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  3. Simplify: (a) (789xx789xx789+211xx211xx211)/(789xx789-789xx211+211xx21...

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  4. Simplify: ((893+786)^2-\ (893-786)^2)/((893xx786))

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  5. Which of the following are prime numbers? 241       (ii)  337      ...

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  6. If Delta stands for the operation text('adding first number to twice t...

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  7. Given that 1^2+2^2+3^2+dot\ +10^2=385 ,\ then find the value of 2^2+4...

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  8. Which of the following numbers is divisible by 3? 541326           ...

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  9. What least value must be assigned to * so that the number 197*5462 ...

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  10. Which of the following numbers is divisible by 4? 67920594         ...

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  11. Which digits should come in place of ** and $ if the number 62684**$ i...

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  12. Show that 4832718 is divisible by 11.

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  13. Is 52563744 divisible by 24?

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  14. What are the values of M and N respectively if M 39048458 N is divisib...

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  15. Find the number of digits in the smallest number which is made up o...

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  16. If the number 3422213 p q is divisible by 99, find the missing digits ...

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  17. x is a positive integer such that x^2+12\ is exactly divisible by x ....

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  18. Find the smallest number to be added to 1000 so that 45 divides the...

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  19. What least number must be subtracted from 2000 to get a number exac...

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  20. Find the number which is nearest to 3105 and is exactly divisible b...

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