Question

25. Simplify: (3^(- 5) ×5^(-5) ×2^(- 5) ×25)/(5^(- 7) × 6^(- 5) )

26. Numbers 1 to 10 are written on ten separate slips (one number on one slip), kept in a box and mixed well. One slip is chosen from the box without looking into it. What is the probability of -

(i) getting a prime number ?

(ii) getting a perfect square number ?

(iii) getting an odd multiple of 3?

27. Subtract: 3a (a + b + c ) – 2 b (a – b + c) from 4c ( – a + b + c )









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Answer 1

Answer:

26.(i)5/10=1/2

(ii)2/10=1/5

(iii)2/10=1/5

27. -3a

Step-by-step explanation:

-3a स्क्वायर -2b स्क्वायर +4 स्क्वायर