First Jim and Jeanne walks across the bridge, it takes 2 minutes.

Jim walks back with the torch light, which takes 1 minute.

Then Louis and Anne walk on the bridge, which takes 10 minutes.

Jeanne comes back with the torch light, it takes 2 minutes.

Finally Jim and Jeanne walks across the bridge, which takes 2 minutes.

Total = 2 + 1 + 10 + 2 + 2 = 17 minutes

A) 9 times | B) 10 times |

C) 1 time | D) 0 times |

Explanation:

How many times can you subtract 10 from 100, for this if we go through logically, it is only 1 time. For the first time if we subtract 10 from 100, then there will no 100 to subtract from.

Hence, it is only 1 time we can subtract 10 from 100.

From the assumption and trial and error method,

last three digits sum must leave the same digit as the answer. It is possible only if the answer must be units digit number leaving tens digit as carry.

And the possible 3rd digit is 5. Since 5 + 5 + 5 = 15

Now, 2nd step is 1 + x + x + x = 5

=> 3x = 4

It is possible with x = 8. 8 + 8 + 8 + 1 = 25 leaving 2 as carry.

Now, 3rd step is 2 + x + x + x = 5 => x = 1

Hence, the three dgits are 1, 8, 5.

**185 + 185 + 185 = 555. **

A) 4 | B) 8 |

C) 12 | D) 16 |

Explanation:

Here given that 9 = 63, 8 = 48, 7=35, ...

The given question follows a pattern that

**9 x (9 - 2) = 9 x 7 = 63**

**8 x (8 - 2) = 8 x 6 = 48**

**7 x (7 - 2) = 7 x 5 = 35**

Similarly, **4 x (4 - 2) = 4 x 2 = 8.**

A) 44 | B) 45 |

C) 46 | D) 50 |

Explanation:

Number of squares in the given figure is

**16 + 9 + 19 + 1 = 45.**

A) 79 hrs | B) 72 hrs |

C) 52 hrs | D) 18 hrs |

Explanation:

From the given data,

18 snakes can eat 18 bananas in 18 hrs.

=> 1 snake can eat 1 banana in 18 hrs

=> 79 snakes can eat 79 bananas in 18 hrs.

Hence, **18 hrs.**

Let the required number be 'X'

**Condition 1** :

$\frac{X}{X}=2X\phantom{\rule{0ex}{0ex}}=2{X}^{2}=X\phantom{\rule{0ex}{0ex}}=\mathbf{}\mathit{X}\mathbf{}\mathbf{=}\mathbf{}\frac{\mathbf{1}}{\mathbf{2}}$

**Condition 2 :**

**$\mathrm{X}\times \mathrm{X}=\frac{\mathrm{X}}{2}\phantom{\rule{0ex}{0ex}}=\mathbf{X}\mathbf{}\mathbf{=}\mathbf{}\frac{\mathbf{1}}{\mathbf{2}}$**

**Therefore, **$\left(\frac{\mathbf{1}}{\mathbf{2}}\right)$ is the number which becomes double when it is divided by itself and becomes half when it is multiplied by itself.

A) 4! | B) 5! |

C) 6! | D) Can't be determined |

Explanation:

NUMERICAL has 9 positions in which 2, 4, 6, 8 are even positions.

And it contains 5 consonents i.e, N, M, R, C & L. Hence this cannot be done as 5 letters cannot be placed in 4 positions.

Therefore, Can't be determined.