Question
How many 100 digit positive numbers are there?
Solution
The given number has 100 digits first digit can be any number other than 0 and so it has 9 values from 1 to 9 All the other 99 digits can be from 0 to 9 i.e 10 values therefore 9*10*10....99 times =  9 × 10 99
More No. System Questions
What will come in the place of questions (?) mark in the following questions.
53, 55, 61, 71, 85, ?
√(10198 )× √(7220 )÷ 16.69 + 2010.375= ?
7, 7, 14, 40, ?, 227
24, 42, 60, ?, 96, 114
196, 196, 203, 229, 292, ?
500, 250, 750, 375, 1125, 562.5, ?
22, 37, 63, 98, 148, ?
What will come in the place of questions (?) mark in the following questions.
1204, 1218, ? , 1267, 1302, 1344
- What will come in place of the question mark (?) in the following series?
13, 15, 18, 23, 30, ? What will come in place of the question mark (?) in the following series?
325, 292, 262, 229, ?, 166
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