Question 1 of 40

Farah uses black and white buttons to form figure that follow a pattern. The first four figure are shown below.
(a) A figure in the pattern has a total of 176 black and white buttons What is the Figure Number? \begin{array}{|c|c|c | c | c |} \hline \mbox{Figure Number} & 1 & 2 & 3 & 4\\ \hline \mbox{Number of black buttons} & 0 & 1 & 3 & 6 \\ \hline \mbox{Number of white buttons} & 1 & 4 & 9 & 16 \\ \hline \mbox{Total number of buttons}& 1 & 5 & 12 & 22 \\ \hline \end{array}
(b) A figure in the pattern has 784 white buttons. How many black buttons are there in that figure?

Question Image of Farah uses black and white buttons to form figure that follow a pattern. The first four figure are shown below. <br>(a) A figure in the pattern has a total of 176 black and white buttons What is the Figure Number? \begin{array}{|c|c|c | c | c |} \hline \mbox{Figure Number} & 1 & 2 & 3 & 4\\ \hline  \mbox{Number of black buttons} & 0 & 1 & 3 & 6 \\ \hline \mbox{Number of white buttons} & 1 & 4 & 9 & 16 \\ \hline \mbox{Total number of buttons}& 1 & 5 & 12 & 22 \\ \hline \end{array} <br>(b) A figure in the pattern has 784 white buttons. How many black buttons are there in that figure?    .
A
(a) 9
(b) 376
B
(a) 11
(b) 378
C
(a) 13
(b) 380
D
(a) 15
(b) 382
E
None of the above