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Algebra Level 1

$\large \lceil 5.9 \rceil \times \lfloor 6.4 \rfloor =\, ?$

Clarification : $\lceil \cdot \rceil$ denotes the ceiling function , and $\lfloor \cdot \rfloor$ denotes the floor function .

2 solutions

Ashish Menon
Jul 18, 2016

$\lceil{5.9}\rceil × \lfloor6.4\rfloor\\ = 6 × 6\\ = \color{#3D99F6}{\boxed{36}}$

Explain it please

Ahmed Samir - 4 years, 8 months ago

A bit late, but anyway - a ceiling function always rounds a number up to the next integer (as with 5.9 ---> 6)

A floor function always rounds down to the last integer (as 6.4 ---> 6).

You can check the wiki links shown in the question.

A Former Brilliant Member - 1 year, 3 months ago

Hung Woei Neoh
May 20, 2016

$\lceil 5.9 \rceil \times \lfloor 6.4 \rfloor\\ = 6 \times 6\\ =\boxed{36}$