Question

The dierence between the highest and the lowest values of a set of data is called________. Q.2 The product of ( 9 −4 ) , ( x4y), ( xy3) and (x3y2) is______. Q.3 How many faces and edges does a triangular prism have? Q.4 TSA of a prism = LSA + 2 x ______. Q.5 Write 0.0000507 in standard form. Q.6 A pipe that lls 25% of a tank in 1 hour will ll it completely in ______ hours. Q.7 4x2 - 9y2 = ? Q.8 A point with y coordinate zero will lie on ______ axis. Q.9 If 62y3 is a multiple of 3, where y is a single digit then what should be the minimum and maximum value of y? Q.10 A number divisible by both 2 and 5 must have ____ in its ones place. SECTION – B (Attempt any five questions) Q.11 Evaluate using suitable identity: 1.05 × 9.5. Q.12 Simplify: 3y(2y – 7) – 3(y – 4) – 63 and evaluate for y = – 2. Q.13 Draw the top, side and front view of the given gure. Q.14 Find the length of the altitude of a rhombus if lengths of its two diagonals are 12cm and 16cm respectively. Q.15 Evaluate : (6-1 – 7-1 )-1 – (5 -1 – 4-1 )-1. Q.16 Write Euler’s formula, then nd the number of faces in a solid if the number of vertices is 8 and number of edges is 12. Q.17 In a stack there are 5 books each of thickness 20mm and 5 paper sheets each of thickness 0.016mm. What is the total thickness of the stack? Write in standard form. SECTION – C (Attempt any ten questions) Q.18 12 cards numbered 1,2,3,……11,12 are kept in a box and mixed thoroughly. If one

Answer 1

Answer:

1.subtraction

2.(9-4),(x4y),(xy3),(x3y2)=5,4xy,3xy,32y

=xy×xy×y=5×4×3×32

=xpower 2y Power3=1920

3.5 faces

4. please write in full form

5. 507

6.4 hours

7. 4×2-9y2=8-9y2

y = 8-9+2

y= 1

8. x axis

9. minimum is 3 mad maximum is 9 or 6

10. the number is 10

11. when we multiply it we get 9.975

12. 3y+2y+y=7+4+3+63

6y= 78

y=78÷6

y=12

14. 12×16= 192 feet

15. (5-6)-1-(4-3)

-1-1-1

-3

16. with rulers formula 12×16=192

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