A Game with Kismet | Suarez II

Chapter 21

"A two-digit number is chosen at random. What is the probability that the chosen number is a multiple of 7?"

I started scribbling down numbers on the last page of my notebook. Mabilis kong isinulat ang nga numero na parang may karerang dinaluhan ang kamay ko.

"Letter A is 1/10. B is 1/9, C is 11/90, D is 12/90 and E is 13/90."

Nawala sa isip ko na may pagpipilian pala, pero sayang lang din ang oras kung hinintay ko pa. I was close to solving the problem someone answered.

"E, 13/90," siguradong sagot ni Rad.

"Suarez, why is it 13/90?"

Hindi pa rin ako humihinto sa pakokompyut, umaasang mali ang sagot niya para ako ang makasagot ng tama.

"There are 90 two-digit numbers from 10, 11, 12, 13 . . . 99." Nirecite niya pa lahat ng numbers. "Out of the 90 integers, there are 13 multiples of 7: 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98. Therefore the probability that the chosen number is a multiple of 7 is 13/90 or 14.4444 percent."

Just in time when he finished explaining his solution, I am done solving. Magkapareho ang sagot na nakuha ko at ang sinabi niya.

"Correct. Letter, E, 13/90 is the right answer."

Kinagat ko ang loob ng pisngi bago sinulyapan si Rad. He looked back at me and sported an arrogant smirk.

"Next question, a regular deck of cards has 52 cards. Assuming that you do not replace the card you had drawn before the next draw, what is the probability of drawing three aces in a row?"

Dinoble ko ang bilis ko sa pagkokompyut para makasagot. Napuno ang loob ng kuwarto ng tunog ng mga nagbabagsakang calculator at nagpupunit na papel.

"1 in 5525, Sir," sagot ko kaya napatingin ang lahat sa akin.

Mahinang natawa ang guro namin sa Statistics and Probability. "You didn't wait for my choices, huh."

Oo nga pala.

"I'll accept your answer if your solution is precise."

I nodded. "The probability of getting three aces in a row is the product of the probabilities for each draw. For the first ace, that is 4 in 52 or 1 in 13; for the second, it is 3 in 51 or 1 in 27; and for the third, it is 2 in 50 or 1 in 25. So the overall probability, P, is P=1/13*1/17*1/25=1/5,525," paliwanag ko.

Tumango si Sir Mengillo. "Precisely, Videl."

Nangiti ako dahil bakas sa mukha niya ang pagkamangha. Si Rad ang una kong tinignan nang mawala sa akin ang paningin ng guro.

Nakangisi na naman siya kaya inirapan ko.

"It is the characteristics of the sample data."

"Statistics," mabilis at malakas kong sagot.

"It is characteristics of the population data."

"Parameters," si Rad.

"It is used to study statistics for biological, a variety of research fields and topics, public health, or medical applications. "

"Biostatistics," sabay naming sagot, dahilan kung bakit kami nagkatinginan.

"It has ordered qualitative variables in the given data such as sometimes, always, never, frequently, and much more."

"Ordinal Variables." Nagsabay kaming muli.

"Epal," I mouthed at him when he looked at me for the nth time.

"You're slow," he mouthed.

At least not slow enough to lose. Nagtanong pa si Sir Mengillo at nagsasalisihan na lang kami ni Rad sa pagsagot. Hindi na nakapagtimpi si Caela at kinuha ang ballpen ko para hindi ako makapagkompyut.