25marks_M-9ewe
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SSLC EXAM-TARGET 40 My Revision -AN HOUR for 25
Yakub S., GHS Nada,Belthangady Taluk, D.K. Phone;9008983286 Email:[email protected] Page 1
Time: 1 Hour Mathematics marks : 25 I. Choose the best alternative from the following options 1 x 5=5
1. If f(x) = 3y2 + 4y + 1 ,then f(-1) = a) 0 b) 1 c) -2 d) -1
2. The complimentary angle of sin(90 − --- (ߠa) tan d) cosec ߠc) cot ߠb) cos ߠ ߠ
3. The slope of a line of inclination 450 a) 1 b) √3 c) 1
√3 d) ND
4. The sum of first 15 natural numbers
a) 100 b) 15 c) 115 d) 120
5. The value of 4! a) 8 b) 12 c) 24 d) 64
II. Answer the following. 1 x 3 =3 6. Write the prime factors of 21 7. If n(A) = 7, n(B)= 6, n(A∩B) = 3 ,find n( AUB) ? 8. In the figure ∆ABC~ ∆PQR , ܥܤܣ∆ ݎܣ
∆ ݎܣ =
III. Answer the following. 2 x 5=10 9. If 16.nP3 = 13.n+1P3, find the value of ‘n’.
10. Rationalise the denominator and simplify:√+√√−√
11. Solve the quadratic equation x2 +12 =7x using formula 12. Find the value of sin2 ߨ
42ݏ + ߨ
42ݐ - ߨ
3
13. Draw two tangents to a circle of radius 6cm from an external point 10 cm away from the centre.
IV. Answer the following. 3 x 1=3 14. Calculate the standard deviation.
X 10 20 30 40 50
f 4 3 6 5 2
V. Answer the following. 4 x 1 = 4 15. Prove the converse of Phythagoras theorem.
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