A) 12 | B) 13 |

C) 15 | D) Cannot be determined |

Explanation:

In a usual dice, the sum of the numbers on any two opposite faces is always 7. Thus, 1 is opposite 6, 2 is opposite 5 and 3 is opposite 4.

Consequently, when 4, 3, 1 and 5 are the numbers on the top faces, then 3, 4, 6 and 2 respectively are the numbers on the face touching the ground. The total of these numbers = 3 + 4 + 6 + 2 = 15.

A) 130 | B) 132 |

C) 138 | D) 140 |

Explanation:

In the figure, there are

5 columns containing 4 cubes each;

33 columns containing 3 cubes each;

9 columns containing 2 cubes each and 3 columns containing 1 cube each.

Total Number of cubes = ( 5 x 4) + (33 x 3) + (9 x 2) + (3 x 1) = 20 + 99 + 18 + 3 = 140

A) 45 | B) 46 |

C) 48 | D) 49 |

Explanation:

In the figure, there are 21 columns containing 2 cubes each and 4 columns containing 1 cube each.

Total number of cubes = (21 x 2) + (4 x 1) = 42 + 4 = 46

A) 80 | B) 87 |

C) 89 | D) 90 |

Explanation:

In the figure, there are 9 columns containing 5 cubes each, 7 columns containing 4 cubes each, 5 columns containing 3 cubes each and 1 column containing 1 cube.

Total number of cubes = (9 x 5) + (7 x 4) + (5 x 3) + (1 x 1) = 89

A) 64 | B) 66 |

C) 68 | D) 70 |

Explanation:

In the figure, there are 34 columns containing 2 cubes each.

Total number cubes = (34 x 2) = 68

A) 8 | B) 9 |

C) 12 | D) 15 |

Explanation:

Clearly, there are 4 columns containing 1 cube each, 4 columns containing 2 cubs each and 1 column containing 3 cubes.

Hence, there are (4 x 1) + (4 x 2) + (1 x 3) = 4 + 8 + 3 = 15 cubes in the given figure.