Question
Ecology is the scientific study of the relationships
between living organisms and their environment. Who first proposed the term "ecology"?Solution
Ernest Hackel proposed the term "ecology" in 1866. The word "ecology" is derived from the Greek words 'oikos,' meaning habitat, and 'logos,' meaning study.
1649.98 ÷ 15.48 × 8.12 = ? × 8.16
(11.11 ×  31.98) + 14.15% of 749.99 = ? + 124.34
[√ (121.23) ÷ √ (12100.04)] × √ 80.95 = 3/10 + ? ÷ 4
...- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
1299.999 ÷ 325.018 × 24.996 = ?
At a village trade fair a man buys a horse and a camel together for Rs 51,250. He sold the horse at a profit of 25 % and the camel at a loss of 20 %. If...
?% of (136.31 ÷ 16.97 × 75.011) = 179.98
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
540.11 ÷ 17.98 × 5.14 – 131.9 = √?Â
√ 27556.11  × √ 624.9  – (22.02) 2  =? × 5.95Â
