# Numbers Questions

A) 30,400 | B) 30,200 |

C) 34,600 | D) 38,400 |

Explanation:

we can treat every two consecutive terms as one.

So, we will have a total of 100 terms of the nature:

(2 + 5) + (7 + 6) + (12 + 7).... => 7, 13, 19,....

We know the sum of n terms $\frac{n\left(n+1\right)}{2}$

Now, a= 7, d=6 and n=100

Hence the sum of the given series is

S= 100/2 x[2 x 7 + 99 x 6]

=> 50[608]

=> 30,400.

A) 4 | B) 1 |

C) 5 | D) 7 |

Explanation:

1 1

8 A 9

+ 4__ C 6 __

- 6__ B 2 __

__ 7 2 3 __

We may represent the given sum, as shown below:

1 + A + C - B = 12

A + C - B = 11

Now,giving the maximum values to A and C, i.e.

A = 9 and C = 9, we get B = 7.

A) Rs. 13 and Rs. 17 | B) Rs. 17 and Rs. 19 |

C) Rs. 23 and Rs. 17 | D) Rs. 13 and Rs. 19 |

Explanation:

If fares for cities L and M from K are x and y respectively, then

2x + 3y = 77 or 6x + 9y = 231...(1)

3x + 2y = 73 or 6x + 4y = 146...(2)

subtracting 2 from 1, we get

5y = 85

y = Rs. 17 => x = Rs. 13

A) 12 | B) 8 |

C) 6 | D) 4 |

Explanation:

Two digit numbers: The two digits can be 2 and 9: Two possibilities 29 and 92.

Three-digit numbers: The three digits can be 1, 2 and 9 => 3! Or 6 possibilities.

We cannot have three digits as (3, 3, 2) as the digits have to be distinct.

We cannot have numbers with 4 digits or more without repeating the digits.

So, there are totally 8 numbers.

A) 7 | B) 5 |

C) 4 | D) 6 |

Explanation:

Sum of decimal places = 7.

Since the last digit to the extreme right will be zero (since 4 x 5 = 20), so there will be 6 significant digits to the right of the decimal point.

A) L / (k-3) | B) k / (L-3) |

C) 2K / 3L-K | D) 3L / K(K-3) |

Explanation:

Intial contribution = L/K

After 3 men drop, then contribution =L/K-3

The amount more to pay in contribution = $\frac{L}{K-3}-\frac{L}{K}$

= $\frac{3L}{K(K-3)}$

A) 147 | B) 168 |

C) 162 | D) 182 |

Explanation:

The pattern is -4, +9,-16, +25, -36

The next number=119+49=168

A) 0 | B) 1 |

C) 3 | D) 5 |

Explanation:

All powers of 6 has 6 in units place so answer will definitely be 1.