Question
How much greater than 30 is the result when twice the
sum of the first five prime numbers is subtracted from the largest two-digit prime number?Solution
Sum of first five prime numbers = 2 + 3 + 5 + 7 + 11 = 28 Largest two-digit prime number = 97 Let the required number be ‘x’ ATQ; 30 + x = 97 – (2 × 28) Or, 30 + x = 41 Or, x = 11
226  231   466  ?  5606  28031    Â
What will come in place of the question mark (?) in the following series?
80, 200, 400, 600, ?, 300
What will come in place of the question mark (?) in the following series?
72, 108, 172, ?, 416, 612
What will come in place of the question mark (?) in the following series?
175, 160, 140, 115, ?
44   45    41   50    ?      59    23
...24    12    ?    24  96    768
168, 164, 155, 139, ?, 78
380, ?, 360, 324, 260, 160
196, 196, 203, 229, 292, ?
79, 248, ?, 225, 125, 206
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