CBSE CLASS 10 MATHS||6 IMPORTANT QUESTIONS||CBSE EXAM-2021||RAJESH TUTORIALS

Описание: CBSE CLASS 10 MATHS||6 IMPORTANT QUESTIONS||CBSE EXAM-2021
#rajeshtutorials #class10boardexam

This video is a short guide for CBSE BOARD Examinees. In this video I have solved six objective questions for exams.
1. ABC is a triangle in which D and E are points on AB and AC respectively such that AD =1 cm and BD = 2 cm. Find the ratio of DE and BC.
This question is based on similarity of triangles. Similar triangles have their sides in proportion.
2. For what value of k, the roots of equation x^2 +4x +k =0 are real?
For real roots discriminant is greater than or equal to zero.
3. Find the value of k for which the roots of the equation 3x^2 - 10x + k =0 are reciprocal to each other?
Product of the roots = c by a.
4. Complementary angles related question.
5. nth term of an AP = a +(n-1) d
6. LCM = product of two numbers divided by H C F

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