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CBSE Class 10 Free Doubts and Solutions

CBSE - X - Mathematics

Let a,b,x,y be real numbers such that a^2 + b^2 = 81, x^2 + y^2 = 121 and ax + by = 99. Find the value of ay - bx.

Asked by acv27joy 16th December 2018, 4:39 PM
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CBSE - X - Hindi

Answer this please it's urgent

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Asked by sajal2402 16th December 2018, 10:49 AM
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CBSE - X - Mathematics

Page 255 Question 22 The ratio of the sum of n terms of two AP is (7n+1) : (4n+27). Find the ratio of their nth terms

Asked by miniprasad 15th December 2018, 7:15 PM

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CBSE - X - Mathematics

Page 255 Question 23 The sums of n terms of three arithmetic progressions are S1, S2, and S3.The first term of each is unity and the common differences are 1,2 and 3 respectively. Prove that S1+S3=2S2

Asked by miniprasad 15th December 2018, 7:13 PM
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CBSE - X - Geography

Highlight the location of following  industries: 1) TISCO and 2)  IISCO

Asked by rdas13306 15th December 2018, 6:39 PM
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CBSE - X - Mathematics

Show that the points (-2, 3), (8, 3) and (6, 7) are the vertices of a right triangle.

Asked by maddelavenukumar 15th December 2018, 5:31 PM
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CBSE - X - Mathematics

Evaluate 1-2-3+2-3-4+........+ up to 100 terms.

Asked by acv27joy 15th December 2018, 4:33 PM
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CBSE - X - Mathematics

3 circles each of radius 1 cm, touch each other externally and they lie between two parallel lines. Find the minimum possible distance between the lines.

Asked by acv27joy 15th December 2018, 4:30 PM
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CBSE - X - Grammar

an honest

Asked by karanbhaivanzara54 15th December 2018, 2:03 PM
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