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Which one of the following numbers is divisible by 11?
Aptitude Number System Difficulty: Medium
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A number is divisible by 11 if the difference between the sums of the digits in odd and even places respectively is
Aptitude Number System Difficulty: Easy
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Which one of the following numbers is divisible by 3?
Aptitude Number System Difficulty: Easy
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The number 89715938* is divisible by 4. The unknown non-zero digit marked as * will be
Aptitude Number System Difficulty: Easy
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Which of the following numbers is not divisible by 18?
Aptitude Number System Difficulty: Easy
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111,111,111,111 is divisible by
Aptitude Number System Difficulty: Hard
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Find the multiple of 11 in the following numbers.
Aptitude Number System Difficulty: Medium
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What least value must be given to $n$ so that the number $6135n2$ becomes divisible by 9?
Aptitude Number System Difficulty: Easy
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Let a number of three digits have for its middle digit the sum of the other two digits. Then it is a multiple of
Aptitude Number System Difficulty: Easy
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Let $x$ be the product of two numbers $3,659,893,456,789,325,678$ and $342,973,489,379,256$. The number of digits in $x$ is
Aptitude Number System Difficulty: Easy
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The last digit in the decimal representation of $\left(\frac{1}{5}\right)^{2000}$ is
Aptitude Number System Difficulty: Medium
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The number formed from the last two digits (ones and tens) of the expression $2^{12n} - 6^{4n}$, where $n$ is any positive integer is
Aptitude Number System Difficulty: Medium
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If $m$ and $n$ are positive integers, then the digit in the unit's place of $5^n + 6^m$ is always
Aptitude Number System Difficulty: Easy
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If $x$ is an even number, then $x^{4n}$, where $n$ is a positive integer, will always have
Aptitude Number System Difficulty: Medium
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The digit in the unit's place of the product $(2464)^{1793} \times (615)^{317} \times (131)^{491}$ is
Aptitude Number System Difficulty: Easy
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The digit in the unit's place of $[(251)^{98} + (21)^{29} - (106)^{100} + (705)^{35} - 16^4 + 259]$ is
Aptitude Number System Difficulty: Medium
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Unit's digit in $(784)^{126} + (784)^{127}$ is
Aptitude Number System Difficulty: Easy
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The digit in the unit place of the number represented by $(7^{95} - 3^{58})$ is
Aptitude Number System Difficulty: Medium
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In the product $459 \times 46 \times 28x \times 484$, the digit in the unit place is $8$. The digit to come in place of $x$ is
Aptitude Number System Difficulty: Medium
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The unit's digit in the product $274 \times 318 \times 577 \times 313$ is
Aptitude Number System Difficulty: Easy
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The digit in the unit's place of the number $(67)^{25} - 1$ must be
Aptitude Number System Difficulty: Easy
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Match List I with List II and select the correct answer:
List I (Product)
A. $(1827)^{16}$
B. $(2153)^{19}$
C. $(5129)^{21}$
List II (Digit in the unit's place)
(1) $1$
(2) $3$
(3) $5$
(4) $7$
(5) $9$
Aptitude Number System Difficulty: Medium
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The digit in the unit's place of the number $123^{99}$ is
Aptitude Number System Difficulty: Easy
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The unit's digit of $13^{2003}$ is
Aptitude Number System Difficulty: Easy
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Find the number of zeros at the end of the result $3 \times 6 \times 9 \times 12 \times 15 \times \dots \times 99 \times 102$.
Aptitude Number System Difficulty: Medium