# Exams

A) 24min | B) 12min |

C) 13min | D) 14min |

Explanation:

In this type of problems the formuae is

(5*x+ or - t)*12/11

Here x is replaced by the first interval of given time. Here x is 5.

t is spaces apart

Case 1 : (5*x + t) * 12/11

(5*5 + 3) * 12/11

28 * 12/11 = 336/11= $31\frac{5}{11}$ min

therefore the hands will be 3 min apart at 31 5/11 min past 5.

Case 2 : (5*x - t) * 12/11

(5*5 -3 ) * 12/11

22 *12/11 = 24 min

therefore the hands will be 3 min apart at 24 min past 5

A) nuclear fission | B) nuclear fusion |

C) natural radioactivity | D) artificial radioactivity |

Explanation:

Hydrogen Bomb is based on the principle of **Nuclear Fusion**.

**Nuclear fusion**is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles.

- The difference in mass between the reactants and products is manifested as either the release or absorption of energy.

A) 12.5% | B) 13.5% |

C) 11.5% | D) 14.5% |

Explanation:

Let principal = P, Then, S.I.= P and Time = 8 years

We know that S.I. = PTR/100

**Rate** = [(100 x P)/ (P x 8)]% = 12.5% per annum.

A) None | B) One |

C) Two | D) Three |

Explanation:

**Given Number:** 4 2 1 5 7 9 3 6 8

**Ascending order: **1 2 3 4 5 6 7 8 9

Hence the required pairs are 12, 49, 16

A) 14 | B) 11 |

C) 8 | D) 5 |

Explanation:

From the given data,

1 rabbit is going towards river not the six eephants. And these 6 elephants saw 2 monkeys are going towards river. Each monkey is holding 1 tortoice.

Hence, **number of animals going towards river are 1 rabbit, 2 monkeys and 2 tortoice **

= 1 + 2 + 2

**= 5.**

A) 1 | B) 2 |

C) 3 | D) 4 |

Explanation:

Area of the park = (60 x 40) = 2400${m}^{2}$

Area of the lawn = 2109${m}^{2}$

Area of the crossroads = (2400 - 2109) = 291${m}^{2}$

Let the width of the road be x metres. Then,

$60x+40x-{X}^{2}=291$

${x}^{2}-100x+291=0$

(x - 97)(x - 3) = 0

x = 3.