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935421 xx 625 = ? 575648125 (b) 58463...

935421 `xx` 625 = ? 575648125 (b) 584638125 584649125 (d) 585628125

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(99.75)^(2)-2250.0625=?( a) 6545.625 (b) 7700(c)8875 (d) 9900.625 (e) None of these

Find the product, using suitable properties: (a) 26 xx (-48) + (-48) xx (-36) (b) 8 xx 53 xx (-125) (c) 15 xx (-25) xx (-4) xx (-10) (d) (-41) xx 102 (e) 625 xx (-35) + (-625) xx 65 (f) 7 xx (50-2) (g) (-17) xx (-29) (h) (-57) xx (-19) + 57

If 3 : 27 :: 5 : ? (A) 25 (B) 125 (C) 250 (D) 625

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(3125^(x)xx5^(9))/(625)=(125)^(-1)

If sqrt(5^(n))=125, then 5^(64n)=25(b)(1)/(125)(c)625(d)(1)/(5)

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RS AGGARWAL-NUMBER SYSTEM-All Questions
  1. The value of 112 xx 5^4 is (a) 6700 (b) 70000 (c) 76500 (d) 77200

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  2. Multiply 5746320819 by 125. 718,290,102,375          (b)  728,490,3...

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  3. 935421 xx 625 = ? 575648125 (b) 584638125 584649125 (d) 58562812...

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  4. (999)^2-(998)^2=? 1992 (b) 1995 (c) 1997 (d) 1998

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  5. (80)^2-(65)^2+81=? 306 (b) 2094 (c) 2175 (d) 2256 None of these

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  6. (24+25+26)^2-(10+20+25)^2=? 352 (b) 400 (c) 752 (d) 2600 None o...

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  7. (65)^2-(55)^2=? 10 (b) 100 (c) 120 (d) 1200

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  8. If a and b be positive integers such that a^2-b^2=19 , then the value ...

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  9. If a\ a n d\ b are positive integers, a\ >\ b and (a+b)^2-(a-b)^2> 29 ...

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  10. 397xx397+104xx104+2xx397xx104=? 250001 (b) 251001 (c) 260101 (d...

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  11. If (64)^2-(36)^2=20xxx\ t h e n\ x=? 70 (b) 120 (c) 180 (d) 140...

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  12. ((489+375)^2-\ (489-375)^2=?)/((489xx375)) 144 (b) 864 (c) 2 (d...

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  13. ((963+476)^2+\ (963-476)^2)/((963xx963+\ 476xx476))=? 2 (b) 4 (c) ...

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  14. (768×768×768+232×232×232)/(786×768−768×232+232×232) =? (a) 1000       ...

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  15. (854×854×854−276×276×276)/(854×854+854×276+276×276)=? (a) 1130        ...

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  16. (753×753+247×247−753×247)/(753×753×753+247×247×247)=? (a) 1/1000 (b) 1...

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  17. (256×256−144×144)/112 is equal to (a) 420        (b)  400     (c)  ...

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  18. If a=11\ and\ b=9,\ then the value of ((a^2+b^2+a b)/(a^3-b^3)) is (a...

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  19. If a+b+c=0,\ (a+b)(b+c)(c+a) equals (a) a b\ (a+b) (b) (a+b+c)^2 (c) -...

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  20. If a=7,\ b=5,\ c=3, then the value of a^2+b^2+c^2-a b-b c-c a\ i s -1...

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