AB parallel CD. If DO = 3x – 1, OB = 5x – 3, AO = 6x – 5 and OC = 2x + 1, then the
value of x is
(i) 0 (ii) 1 (iii) 2 (iv) 3
(a) The class-mark of class 140-160 is
(i) 140 (ii) 160 (iii) 150 (iv) 20
(b) The median class is
(i) 120-140 (ii) 140-160 (iii) 160-180 (iv) 180-200
(c) The mean daily pocket allowance is
(i) Rs.150 (ii) Rs.142.50 (iii) Rs.135.70 (iv) Rs.145.20
(d) The upper limit of modal class is
(i) 120 (ii) 140 (iii) 180 (iv) 200
(e) The modal daily pocket allowance is
(i) Rs.125 (ii) Rs.140 (iii) Rs.135 (iv) Rs.160
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Answer:
value of X is zero
X=0
a) iii) 150
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