If (4a + 7b) (4c - 7d) = (4a - 7b) (4c + 7d), then which one of the following is correct?
a/c = b/d
a/c = -b/d
a/d = b/c
4a/7b = 4c/7d
For election to the Lok Sabha, a nomination paper can be filed by
Miscellaneous · Easy
In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a
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Which among the following events happened earliest ?
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An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?
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