Q.1 (a) Write {2,4,6,8,………………..,100} in set builder form. [1]
(b) Find which is greater 3:4 or 4:5 [2]
(c) Find the mean proportional between 8 and 18. [2]
Q.2 (a) Find x.
(b)
Find the value of ‘a’ and ‘b’.
(c) The angles of a triangle are in the ratio 2:3:4. Find the measure of each angle.
Q.3. a. Write the name of congruency in these two triangles. [1]
b. Determine each lettered angles. [2]
c. Write all the subsets of {a,b,c,d} [2]
Section- B (Any 3) [15]
Q.4 a. Write in set builder form {1
2
,
1
3
,
1
4
, … … … … … … .
1
10
} [1]
b. Write the cardinal number of the following sets. [2]
1. {Letters of the word ‘SCHOOL’}
2. {Days of a week}
c. Two numbers are in the ratio 3:2 .If the first number is 900. Find the sum of
the numbers. [2
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Answer:
A1) 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98 and 100.
A2)
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