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Ex. 1 . Find the H.C.F. of 2² x 3² x 5 x 7⁴, 2² x 3⁵ x 7³, 2² x 5³ x 7². Sol. The prime numbers common to given numbers ...
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SOLVED EXAMPLES Ex. 1 . 9587? = 7429 – 4358. Sol let 9587 – X = 7429 – 4358. Then, 9587 – X = 3071 → X = 95 87 – 3071 = 6516 E...
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Ex.11 . If 2x + 3y = 34 and X + Y/y = 13/8, then find the value of 5y + 7x. Sol. the given equations are: 2X + 3y =34 …..(I) an...
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Ex. 1 . Simplify: (I0 5005 -5000 / 10 (ii) 18800 /470 / 20. Sol. (I) 5005 – 500 /10 = 5005 – 5000/10 = 5005 ...
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61. 0.2 + 0.3 + 0.4 + 0.9 + 0.39 = (2/9 + 3/9 + 4/9 + 9/9 + 39/99) = (9/9 + 9/9 + 39/99) = 2 13/33 62. 2.87 – 2.59 = (3 + 0.97) –...
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Ex. 11. Find the greatest possible length which can be used to measure exactly the lengths 4 m 95 cm, 9 m and 16 m 65 cm. Sol. ...
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Ex. 21 simplify: 658x 658 x 658-328 x 328 x 328 658 x 658 + 658 x 328 + 328 x 328 =? Sol. Given exp. (6...
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81. 4.59 x 1.8 ÷ 3.6 + 5.4 of 1/9 -1/5 =? a) 2.695 b) 2.705 c) 3.105 d) None of these ...
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4.Even and odd numbers: (I) Even numbers: a counting number divisible by 2 is called an even number. Thu...
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61 . The value of (1.2 + 0.3 + 0.4 + 0.9 + 0.39)is: a) 0.57 b) 1 20/33 c) 2 1/3 d) 2 ...
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