Bunuel wrote:

What is the measure of the smaller angle formed by the hour and minute hands of a 12-hour clock at 7 o'clock?

(A) 150°

(B) 140°

(C) 135°

(D) 120°

(E) 110°

Twelve numbers divide the clock into 360°/12 = 30-degree sections (twelve of them).

To calculate angles of times

on the hour to the left of 6 o'clock, subtract the little hand's number from 12 and multiply by 30.

At 7 o'clock, little hand points to 7 (big hand is at 12)

(12 - 7) = 5 (sections)

5 * 30° = 150°

Answer A

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In the depths of winter, I finally learned

that within me there lay an invincible summer.

-- Albert Camus, "Return to Tipasa"