1.

Find the least number which must be subtracted from 1400 to make it a perfect square.​

Answer»

Step-by-step explanation:

L.C.M of 1400=2×2×5×5×7×2

all are in pairs except 2,7

so, we should MULTIPLY 2×7 to 1400 to get a PERFECT square

1400×2×7=19600

19600=140×140

hence,19600 is a perfect square

hope it HELPS you

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