[6] How many of the following numbers are divisible by 3 but not by 9 ?2133, 2343, 3474, 4131, 5286,

How many of the following numbers are divisible by 3 but not by 9 ?
2133, 2343, 3474, 4131, 5286, 5340, 6336, 7347, 8115, 9276

None of these

Explanation:

Marking $\left(/\right)$ those which are are divisible by 3 by not by 9 and the others by $\left(X\right) $, by taking the sum of digits, we get:s

2133 $\rightarrow$ 9 $\left(X\right) $

2343 $\rightarrow$ 12 $\left(/\right)$

3474 $\rightarrow$ 18 $\left(X\right) $

4131 $\rightarrow$ 9 $\left(X\right) $

5286 $\rightarrow$ 21 $\left(/\right)$

5340 $\rightarrow$ 12 $\left(/\right)$

6336 $\rightarrow$ 18 $\left(X\right) $

7347 $\rightarrow$ 21 $\left(/\right)$

8115 $\rightarrow$ 15$\left(/\right)$

9276 $\rightarrow$ 24 $\left(/\right)$

Required number of numbers = 6.

$\dfrac{(963 + 476)^2 + (963 - 476)^2}{(963 \times 963 + 476 \times 476)}$=?	Answer
8597 - ? = 7429 - 4358	Answer
The smallest prime number is:	Answer
12345679 x 72 = ?	Answer
Which one of the following is the common factor of (47⁴³ + 43⁴³) and (47⁴⁷ + 43⁴⁷) ?	Answer
-84 x 29 + 365 = ?	Answer
In a division sum, the divisor is 10 times the quotient and 5 times the remainder. If the remainder is 46, what is the dividend ?	Answer
4500 x ? = 3375	Answer
Which of the following numbers will completely divide (49¹⁵ - 1) ?	Answer
9+$\dfrac{3}{4}$+7+$\dfrac{2}{17}$-$\left(9+\dfrac{1}{15}\right)$=?	Answer