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1.) Which term of an A.P …

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1.) Which term of an A.P .21,42,63,... is 210? 2.) Find the 6th term from the end of A.P. -11,-8,-5,...,49 3.)Write the LCM of 13,17and 19. 4.) Solve : A(5,-3) ,B(_9,-2) with the help of distance formula.

Posted by Jatin Kumar 6 years, 3 months ago

CBSE > Class 10 > Mathematics

4 answers

Piyush Dev Jha 6 years, 3 months ago

(4) distance formula=√(x2-x1) +(y2-y1) X1=5;x2=9;y1=-3;y2=-2 √(9-5)²+(-2-3)² √(4)²+(-5)² √16+25 √41

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Piyush Dev Jha 6 years, 3 months ago

(1) d=21;a=21;an=210 an=a+(n-1)d 210=21+(n-1)21 210-21=21n-21 189=21n-21 189+21=21n n=210/21 n=10

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Vanshika Tanwar 6 years, 3 months ago

May be the answer of question 2 is 64.

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Vanshika Tanwar 6 years, 3 months ago

10th term of this A.P would be 210

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