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Q.1. The three angle between bisectors of a triangle are concurrent. Their point of concurrence is called the _____.
Opts. a) circumcentre
b) apex
c) incentre
d) point of intersection
Q.2 (-9) × 6 = ______.
Opts. a) 54 b)15 c) -15 d) -54
Q.3. Which of the following expressions has the value 37?
Opts. a) 10×3+(5+2)
b) 10×4+(5-3)
c) 8×4+3
d) (9×3)+2
Q.4. [(3/4)3]4 = ______.
Opts. A) (3/7)-7
B) (3/7)7
C) (3/7)12
D) (3/7) -12
Q.5. Complete the following table.
Sr.no. indexform base index value
1 16 power 3 ___ 3 ___
2 (-8)2 -8 ___ ___
3 (3/7)2 ___ ___ 9/49
4 (-13)4 ___ 4 ___
Q.6. Draw an obtuse angle triangle. Find the point of concurrence of tye angle bisector of triangle.
Where does the point of concurrence lie?
Q.7. Solve the subquestions
1) Subtract the second expression from the first one.
(4xy- 9z) : (3xy - 16z)
2) Multiply: 12/5 × 4/15
3) Draw the line segment of 6.8 cm and draw its perpendicular bisector.
4) Find the prime factor of given number 216.
Answers
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Answer:
q.1) incentre
q2) -54
q3) 10×3+(5+2)
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