Question 1 of 10

Helen uses some toothpicks to form the pattern below.
\begin{array}{|c|c|} \hline \mbox{Pattern} & \mbox{Number of toothpick} \\ \hline 1 & 6\\ \hline 2 & 15\\ \hline 3 & 25\\ \hline 4 & 35\\ \hline 5 & \\ \hline \end{array}
(a) How many toothpicks will she need to form Pattern 5?
(b) How many toothpick will she need to form Pattern 40?
(c) Helen uses 4955 toothpicks to form a Pattern. Which Pattern is it?

Question Image of Helen uses some toothpicks to form the pattern below. <br> \begin{array}{|c|c|} \hline \mbox{Pattern} & \mbox{Number of toothpick} \\ \hline 1 & 6\\ \hline 2 & 15\\ \hline 3 & 25\\ \hline 4 & 35\\ \hline 5 &  \\ \hline \end{array}<br>(a) How many toothpicks will she need to form Pattern 5? <br>(b) How many toothpick will she need to form Pattern 40? <br> (c) Helen uses 4955 toothpicks to form a Pattern. Which Pattern is it?.
A
(a) 45
(b) 40
(c) 496
B
(a) 47
(b) 43
(c) 498
C
(a) 49
(b) 45
(c) 500
D
(a) 50
(b) 49
(c) 502
E
None of the above