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Class 10 - Mathematics
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Find a, b and c such that the following numbers are in AP: a, 7, b, 23, c.
74 views
doubts
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June 26, 2017
Class 10 - Mathematics
0
Ans
In an AP the first term is 22, nth term is -11 and sum of the first nth terms is 66.Find n and d, the common difference.
63 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
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A Thief runs away from a railway station with a uniform speed off 100m/minute. After one minute the police man runs behind the thief to catch him. He goes at a speed of 100m/minute in the first minute and increases his speed by 10m in each succeeding minute. After how many minutes, will the policeman catch the thief?
66 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
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The interior angles of a polygon are in A.P. The smallest angle is 120 and the common difference is5 .Find the no. of sides of polygon?
40 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
If two different dice are rolled together, find the probability of getting an even number on both dice.
26 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
Find the probability of getting 53 Fridays in a leap year.
68 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
In a garden, 60% of the flowers are lilies and the rest are roses. If 1/5 of the roses and 1/10 of lilies are white, find the probability that flower selected at random is: (i) White lily (ii) Rose (iii) White rose (iv) Lily
67 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
A bag contains 24 balls, out of which x are white. If one ball is drawn at random, the P(E) of drawing a white ball is y. 12 more white balls are added to the bag. Now if a ball is drawn, from the bag, the P(E) of drawing a white ball is 5y/3, find the value of x.
92 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
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The probability of guessing the correct answer of certain text question is x / 12. If the probability of not guessing the correct answer of this text question is 3/4, then find the value of x.
41 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball from the bag is thrice that of the red ball, find the number of blue balls in the bag.
47 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
One ticket is drawn from a bag containing tickets numbered 1 to 40. Find the probability that the selected ticket has a number which is multiple of 7.
32 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
If m times the $${m^{th}}$$ term of AP is equal to n times its $${n^{th}}$$ term find the $${left( {m + n} right)^{th}}$$ term of the AP.
27 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
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If 7th term of an AP is 19 and 9th term is 17 then find its 63rd term.
49 views
doubts
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June 26, 2017
Class 10 - Mathematics
0
Ans
If $$alpha $$ and $$beta $$ are the roots of quadratic polynomial $${x^2},-ax, + ,b$$ then find value of$$ {alpha ^2}, + ,{beta ^2} $$
43 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
a courtyard has dimensions 18 m 72 cm and 13 m 20 cm. it is to be paved with square tiles of the same size. find the least possible no. of such tiles.
29 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
The sum of the first 7 terms of an A.P. is 63 and the sum of its next 7 terms is 161. Find the 28th term of this A.P.
34 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
If the sum of three consecutive terms of an AP is 51 and the product of first and third term is 273. Find the third term.
43 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
Find the 11th term from the last of the AP 10, 7 , 4 , ….. , – 62.
101 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
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If x, y, z are in A.P. , then find the value of (x + y –z) (y + z – x).
51 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
0
Ans
Sum of the 5th and 9th term of an A P is 30. If its 25th term is three times its 8th term find A. P.
62 views
doubts
asked
June 26, 2017
Class 10 - Mathematics
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