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4 × 0.5 + 1 = 3 3×1 + 1 = 4 4 × 1.5 + 1 = 7 7× 2 + 1 = 15 15×2.5 + 1 = 38.5 Hence, x= 3 Hence, (3 + 1) (3 - 1) = 4 × 2 = 8
(95.89% of 625.15 + 36.36% of 499.89) ÷ 6.02 = ? – 269.72
(124.99)² = ?
The greatest number that will divide 398,436, and 542 leaving 7, 11, and 15 as remainders, respectively, is:
1219.98 ÷ 30.48 × 15.12 = ? × 2.16
(?)2 + 6.113 = 25.92 – 19.03
(23.99)2– (17.99)2+ (1378.98 + 44.99) ÷ ? = 608
Find the ratio of the area of an equilateral triangle of side ‘a’ cm to the area of a square having each side equal to ‘a’ cm.