Aptitude Tests 4 Me

Basic Numeracy/Quantitative Aptitude

228. What is the probability of getting a sum of 12 when rolling 3 dice simultaneously?

 (a) 10/216 (b) 12/216 (c) 21/216 (d) 25/216

229. How many diagonals does a polygon with 21 sides have, if one of its vertices does not connect to any diagonal?

 (a) 21 (b) 170 (c) 340 (d) 357

230. How many diagonals does a polygon with 18 sides have if three of its vertices do not send any diagonal? Use the formula: number of diagonals: n (n-3)/2 where n is the number of sides. Each vertex sends of n-3 diagonals.

 (a) 90 (b) 126 (c) 210 (d) 264

231. What is the probability of getting a sum of 8 or 14 when rolling 3 dice simultaneously? Use the formula: number of diagonals: n (n-3)/2 where n is the number of sides. Each vertex sends of n-3 diagonals.

 (a) 1/6 (b) 1/4 (c) 1/2 (d) 21/216

232. The telephone company wants to add an area code composed of 2 letters to every phone number. In order to do so, the company chose a special sign language containing 124 different signs. If the company used 122 of the signs fully and two remained unused, how many additional area codes can be created if the company uses all 124 signs?

 (a) 246 (b) 248 (c) 492 (d) 15128

TOTAL

Detailed Solution

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