If the First Digit of a Seven-Digit Telephone Number Cannot

question 130

Multiple Choice

If the first digit of a seven-digit telephone number cannot be a 0 or 1, what is the probability that a number chosen at random will have all seven digits the same? ​

---

Definitions:

Synapse

The junction between two neurons or a neuron and a muscle where electrical or chemical signals are transmitted.

Dendrite

A branched extension of a neuron that receives impulses from other neural cells and transmits them towards the cell body.

Primitive Learning

A basic form of learning that occurs early in life, often driven by instinct and the need to adapt to the environment, without the need for conscious thought.

Reflexes

Involuntary movements or actions automatically produced by the body in response to specific stimuli, serving as protective mechanisms.