Question
(23.99)2 – (17.99)2 +
(1378.88 + 44.88) ÷ ? = 607.998 What approximate value will come in place of question mark (?) in the given equations?Solution
Here, terms of the given expressions can also be written as (24)2 – (18)2+ ((1379 + 45) ÷ ? )= 608 ⇒ 576 - 324 + (1424 ÷ ? ) = 608 ⇒ 1424 ÷ ? = 356 ⇒ ? = 1424/356 = 4
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