A wall 8m long, 6 m high and 22.5 cm thick is made up of bricks, each measuring 25 cm × 6 cm The number of bricks required is

A 7,200
B 6,400
C 6,000
D 5,600

Correct Answer: 6,400

Volume of wall = (8×100)×(6×100)×22.5 = 10800000Volume of bricks  = 25×11.25×6  = 1687.5.'. The number of bricks  = 108000001687.5 = 6400
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#গণিত #Bima Corporation #সাধারণ বীমা কর্পোরেশন - সহকারী ব্যবস্থাপক ১২.০৭.২০১৯

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৬ জন শ্রমিকের দৈনিক আয় যথাক্রমে ২৫০, ২২৫, ২২৫, ২৪০, ২৬০, ২৩৫। শ্রমিকদের আয়ের মধ্যক ও প্রচুরকের পার্থক্য কত? 
A ১২.৫
B ১০.৫
C ৫
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