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CBSE Class 9 Answered

Explain why 5•11•17+17 is composite no. While 7•6•3•5+5 is not a composite no.
Asked by adityaahuja099 | 05 Jul, 2018, 10:09: AM
answered-by-expert Expert Answer
begin mathsize 18px style straight x equals 5 cross times 11 cross times 17 plus 17 equals 17 cross times open square brackets 5 cross times 11 plus 1 close square brackets equals 17 cross times 56 17 space is space straight a space factor space of space the space given space number space 7 cross times 6 cross times 3 cross times 5 plus 5 equals 5 cross times open square brackets 7 cross times 6 cross times 3 plus 1 close square brackets equals 5 cross times 127 5 space is space straight a space factor space both space are space composite end style
Answered by Arun | 05 Jul, 2018, 10:45: AM

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CBSE 9 - Maths
laxman saves 10% More than his expenditure and bhuwan spends 10% more than his savings if laxman savings is 10% more than bhuwan expenditure what is the ratio of incomes of laxman and bhuwa
Asked by rathorgaurav2945 | 21 Apr, 2024, 10:31: PM
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CBSE 9 - Maths
13. If x = (2 + sqrt(3)) find the value of x ^ 2 + 1/(x ^ 2)
Asked by monika.vns14 | 18 Apr, 2024, 05:15: PM
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CBSE 9 - Maths
3√5+√3/√5-√3
Asked by gulshanelectronics2017 | 15 Apr, 2024, 05:35: PM
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CBSE 9 - Maths
find the value of n in 7^2n+1÷49=7^3
Asked by tripura78839 | 12 Apr, 2024, 09:05: PM
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CBSE 9 - Maths
how to solve it
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Asked by singhanjali0199 | 12 Apr, 2024, 08:29: PM
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CBSE 9 - Maths
√2x^2+3x+√2
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Asked by killerstealer593 | 11 Apr, 2024, 07:50: PM
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CBSE 9 - Maths
x²-22x+120
Asked by rson0295 | 01 Apr, 2024, 08:55: AM
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CBSE 9 - Maths
Draw the graph of the equation of line 2x + 3y = 6. Write the co ordinates of the point where the line intersects X-axis and Y-axis.
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Asked by saee.shinde3069 | 31 Mar, 2024, 10:12: PM
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CBSE 9 - Maths
locate √2 on number line
Asked by rathoreraj7296 | 31 Mar, 2024, 08:09: PM
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CBSE 9 - Maths
ab is diameter of circle with centre o . CD is a code equal to the radius of the circle a c and b b when extend intersect at the point e prove that angle a e b is equals to 60 degree
Asked by divyanshibirla037 | 29 Mar, 2024, 03:26: PM
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