164
Q:

What is the number of triangles that can be formed whose vertices are the vertices of an octagon but have only one side common with that of octagon?

A) 64 B) 32
C) 24 D) 16

Answer:   B) 32



Explanation:

  

 

When the triangles are drawn in an octagon with vertices same as those of the octagon and having one side common to that of the octagon, the figure will appear as shown in (Fig. 1).

 

   

 

Now, we shall first consider the triangles having only one side AB common with octagon ABCDEFGH and having vertices common with the octagon (See Fig. 2).Such triangles are ABD, ABE, ABF and ABG i.e. 4 in number.

 

 

 

Similarly, the triangles having only one side BC common with the octagon and also having vertices common with the octagon are BCE, BCF, BCG and BCH (as shown in Fig. 3). i.e. There are 4 such triangles.

 

This way, we have 4 triangles for each side of the octagon. Thus, there are 8 x 4 = 32 such triangles.

Q:

In the question, a word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as in two matrices given below. The columns and rows of Matrix I are numbered from 0 to 4 and that of Matrix II are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, e.g., 'E' can be represented by 14, 31, etc. and 'R' can be represented by 78, 89 etc. You have to identify the set for the word 'LAND'.

 

 

A) 13,58,20,55 B) 11,95,42,79
C) 23,43,96,34 D) 30,78,42,85
 
Answer & Explanation Answer: C) 23,43,96,34

Explanation:
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0 133
Q:

Rahul, Prem, Shyam, Geet and Rinku are five friends among which Shyam is the tallest. Rahul is shorter than Prem but taller than Rinku. Geet is little shorter than Prem but little taller than Rahul. Who is taller than Rinku but shorter than Geet?

A) Rahul B) Rinku
C) Prem D) Geet
 
Answer & Explanation Answer: A) Rahul

Explanation:
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1 377
Q:

A) 21, 24, 96, 66, 02 B) 40, 12, 95, 85, 43
C) 03, 33, 89, 59, 11 D) 01, 33, 65, 76, 34
 
Answer & Explanation Answer: C) 03, 33, 89, 59, 11

Explanation:
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0 390
Q:

A) 98, 10, 58, 12, 99 B) 59, 04, 95, 01, 56
C) 77, 21, 65, 33, 68 D)  86, 40, 75, 13, 97
 
Answer & Explanation Answer: B) 59, 04, 95, 01, 56

Explanation:
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1 404
Q:

Select the missing letter from the given options?

A) O B) M
C) K D) P
 
Answer & Explanation Answer: C) K

Explanation:
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1 509
Q:

If a mirror is placed on the line MN, then which of the answer figures is the right image of the given figure?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: B) 2

Explanation:
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2 427
Q:

Find the missing number?

A) 70 B) 62
C) 64 D) 68
 
Answer & Explanation Answer: B) 62

Explanation:
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5 724
Q:

If a mirror is placed on the line MN, then which of the answer figures is the right image of the given figure?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: B) 2

Explanation:
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4 618