answer all the questions with proper solution
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1) 21 [ 1 + 20= 1 + 20]
=>21 [ 21= 21]
=>21×21= 21×21
=>441= 441.(answer).
2) 49 [50 - 1=50 - 1]
=>49 [49=49]
=>49×49 = 49×49
=>2401 = 2401.(answer).
3) 14 [1 + 10 + 3]
=>14 [11 + 3]
=>14 × 14
=>196.(answer).
Like this do the rest.
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