____ are the most intelligent mammals on earth.
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Edward Jenner discovered vaccine for which of the following disease?
What did J. B. Dunlop invent?
If A=1, CAT=60, then MAN=?
If y=2-x1+x, then what is the value of 1y+1 + 2y+1y2-1 ?
Who developed the theory of relativity?
Kaleidoscope was invented by ________.
Who discovered Oxygen?