In a certain code language ‘first letter represents second’ is written as ‘7$4@’. What is the code for ‘first’?
I. In a certain code ‘word letter in first’ is written as ‘7%6$’.
II. In a certain code ‘does in first’ is written as ‘6$9’.
From the question, first letter represents second – 7 $ 4 @............(i) From I Word letter in first – 7 % 6 $ ………….. ii) Using (i) and (ii), first letter – 7$ Hence, I alone is not sufficient. From II, does in first’ – 6 $ 9 ………………(iii) Using (i) and (iii), first - $ Hence II alone is sufficient.
(14.073)² + (32.103)² + (43.9653)² + (52.983)² + ? = (102.45)² + (98.007)²
12   18   31   51   ?   112
13 19 32 52 ? 113
12, 36, 80, 164, 328, ?
2, 2, 6, 30, ?, 1890
58     69      56       ?      54       73
...17, 9, ?, 13.5, 25, 65
3   2    10   ?   17   16
78   79    75   84    ?      93    57
...580 557 528 497 ? 419