Question
A box contains 6 blue shirts, 7 yellow shirts and 9 pink
shirts. In how many ways can 4 shirts be drawn from the box, if at least one blue shirt, one yellow shirt and one pink shirt is to be included in a draw?Solution
Required number of ways = (6C2 ) × 7C1 × 9C1 => (15 × 7 × 9) + (6 × 21 × 9) + (6 × 7 × 36) => 945 + 1134 + 1512 = 3591
Consider the following regions of India:
1. Western Ghats
2. Aravali Hills
3. Eastern Himalayas
Which of the above...
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What percent of the earth’s surface is covered by the Atlantic Ocean?
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Where is the 'Ninety East Ridge' located?
In which atmospheric layer is there no decrease in temperature with an increase in altitude?
A cyclone is known by different names in different parts of the world. It is called a ‘________________’ in Japan and Philippines.
Machkund Hydroelectric Project is a joint venture of which states?
What does a solstice represent?
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