Q8 of 114 Page 3

Observe the following pattern


And find the value of


From observation:

(1 × 2) + (2 × 3) + (3 × 4) + (4 × 5) + (5 × 6) =


= 70


More from this chapter

All 114 →
6

Observe the following pattern


And find the value of


(i) 1002-992 (ii) 1112-1092


(iii)992-962

 7

Which of the following triplets are Pythagorean?

(i) (8, 15, 17)


(ii) (18, 80, 82)


(iii) (14, 48, 51)


(iv) (10, 24, 26)


(v) (16, 63, 65)


(vi) (12, 35, 38)

 9

Observe the following pattern



And find the values of each of the following:


(i) 1+2+3+4+5+……….+50


(ii) 31+32+……..+50

 10

Observe the following pattern


And find the values of each of the following.


(i)


(ii)